40313279 has 4 divisors (see below), whose sum is σ = 40363920. Its totient is φ = 40262640.

The previous prime is 40313267. The next prime is 40313281. The reversal of 40313279 is 97231304.

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 40313279 - 2¹² = 40309183 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 (40313179) 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, 24107 + ... + 25724.

It is an arithmetic number, because the mean of its divisors is an integer number (10090980).

Almost surely, 2^40313279 is an apocalyptic number.

40313279 is a deficient number, since it is larger than the sum of its proper divisors (50641).

40313279 is an equidigital number, since it uses as much as digits as its factorization.

40313279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50640.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 40313279 is about 6349.2738954939. The cubic root of 40313279 is about 342.8857011347.

The spelling of 40313279 in words is "forty million, three hundred thirteen thousand, two hundred seventy-nine".