40492357 has 4 divisors (see below), whose sum is σ = 40513120. Its totient is φ = 40471596.

The previous prime is 40492343. The next prime is 40492373. The reversal of 40492357 is 75329404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40492357 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 (40492327) 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, 7113 + ... + 11470.

It is an arithmetic number, because the mean of its divisors is an integer number (10128280).

Almost surely, 2^40492357 is an apocalyptic number.

It is an amenable number.

40492357 is a deficient number, since it is larger than the sum of its proper divisors (20763).

40492357 is a wasteful number, since it uses less digits than its factorization.

40492357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20762.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40492357 is about 6363.3605115536. The cubic root of 40492357 is about 343.3926688120.

The spelling of 40492357 in words is "forty million, four hundred ninety-two thousand, three hundred fifty-seven".