13962431909 has 4 divisors (see below), whose sum is σ = 14106374604. Its totient is φ = 13818489216.

The previous prime is 13962431897. The next prime is 13962431921. The reversal of 13962431909 is 90913426931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13962431897) and next prime (13962431921).

It can be written as a sum of positive squares in 2 ways, for example, as 4118815684 + 9843616225 = 64178^2 + 99215^2 .

It is a cyclic number.

It is not a de Polignac number, because 13962431909 - 2¹² = 13962427813 is a prime.

It is a super-2 number, since 2×13962431909² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13962431929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71971202 + ... + 71971395.

It is an arithmetic number, because the mean of its divisors is an integer number (3526593651).

Almost surely, 2^13962431909 is an apocalyptic number.

It is an amenable number.

13962431909 is a deficient number, since it is larger than the sum of its proper divisors (143942695).

13962431909 is an equidigital number, since it uses as much as digits as its factorization.

13962431909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143942694.

The product of its (nonzero) digits is 314928, while the sum is 47.

The spelling of 13962431909 in words is "thirteen billion, nine hundred sixty-two million, four hundred thirty-one thousand, nine hundred nine".