69951421 has 4 divisors (see below), whose sum is σ = 69983644. Its totient is φ = 69919200.

The previous prime is 69951397. The next prime is 69951433. The reversal of 69951421 is 12415996.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24860196 + 45091225 = 4986^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 69951421 - 2⁵ = 69951389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69951461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12600 + ... + 17281.

It is an arithmetic number, because the mean of its divisors is an integer number (17495911).

Almost surely, 2^69951421 is an apocalyptic number.

It is an amenable number.

69951421 is a deficient number, since it is larger than the sum of its proper divisors (32223).

69951421 is a wasteful number, since it uses less digits than its factorization.

69951421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222.

The product of its digits is 19440, while the sum is 37.

The square root of 69951421 is about 8363.6966109490. The cubic root of 69951421 is about 412.0331708141.

The spelling of 69951421 in words is "sixty-nine million, nine hundred fifty-one thousand, four hundred twenty-one".