40493869 has 8 divisors (see below), whose sum is σ = 45505152. Its totient is φ = 35753520.

The previous prime is 40493861. The next prime is 40493933. The reversal of 40493869 is 96839404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40493869 - 2³ = 40493861 is a prime.

It is a super-2 number, since 2×40493869² = 3279506853178322, which 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 (40493861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67417 + ... + 68014.

It is an arithmetic number, because the mean of its divisors is an integer number (5688144).

Almost surely, 2^40493869 is an apocalyptic number.

It is an amenable number.

40493869 is a deficient number, since it is larger than the sum of its proper divisors (5011283).

40493869 is a wasteful number, since it uses less digits than its factorization.

40493869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135467.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 40493869 is about 6363.4793155946. The cubic root of 40493869 is about 343.3969428964.

The spelling of 40493869 in words is "forty million, four hundred ninety-three thousand, eight hundred sixty-nine".