40799531 has 4 divisors (see below), whose sum is σ = 40896864. Its totient is φ = 40702200.

The previous prime is 40799527. The next prime is 40799569. The reversal of 40799531 is 13599704.

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 40799531 - 2² = 40799527 is a prime.

It is a super-2 number, since 2×40799531² = 3329203459639922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40799501) 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, 48035 + ... + 48876.

It is an arithmetic number, because the mean of its divisors is an integer number (10224216).

Almost surely, 2^40799531 is an apocalyptic number.

40799531 is a deficient number, since it is larger than the sum of its proper divisors (97333).

40799531 is an equidigital number, since it uses as much as digits as its factorization.

40799531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97332.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 40799531 is about 6387.4510565640. The cubic root of 40799531 is about 344.2588050389.

The spelling of 40799531 in words is "forty million, seven hundred ninety-nine thousand, five hundred thirty-one".