40768831 has 4 divisors (see below), whose sum is σ = 40792752. Its totient is φ = 40744912.

The previous prime is 40768817. The next prime is 40768841. The reversal of 40768831 is 13886704.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40768831 - 2¹¹ = 40766783 is a prime.

It is a super-2 number, since 2×40768831² = 3324195162213122, 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 (40768841) 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, 9190 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (10198188).

Almost surely, 2^40768831 is an apocalyptic number.

40768831 is a deficient number, since it is larger than the sum of its proper divisors (23921).

40768831 is a wasteful number, since it uses less digits than its factorization.

40768831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23920.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 40768831 is about 6385.0474547962. The cubic root of 40768831 is about 344.1724364213.

The spelling of 40768831 in words is "forty million, seven hundred sixty-eight thousand, eight hundred thirty-one".