40491310 has 8 divisors (see below), whose sum is σ = 72884376. Its totient is φ = 16196520.

The previous prime is 40491289. The next prime is 40491317. The reversal of 40491310 is 1319404.

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

It is a super-2 number, since 2×40491310² = 3279092371032200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40491317) 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, 2024556 + ... + 2024575.

It is an arithmetic number, because the mean of its divisors is an integer number (9110547).

Almost surely, 2^40491310 is an apocalyptic number.

40491310 is a deficient number, since it is larger than the sum of its proper divisors (32393066).

40491310 is a wasteful number, since it uses less digits than its factorization.

40491310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049138.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40491310 is about 6363.2782431699. The cubic root of 40491310 is about 343.3897091158.

The spelling of 40491310 in words is "forty million, four hundred ninety-one thousand, three hundred ten".