40906690 has 32 divisors (see below), whose sum is σ = 80694144. Its totient is φ = 14807040.

The previous prime is 40906687. The next prime is 40906711. The reversal of 40906690 is 9660904.

It is a super-2 number, since 2×40906690² = 3346714573512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27547 + ... + 28993.

It is an arithmetic number, because the mean of its divisors is an integer number (2521692).

Almost surely, 2^40906690 is an apocalyptic number.

40906690 is a deficient number, since it is larger than the sum of its proper divisors (39787454).

40906690 is a wasteful number, since it uses less digits than its factorization.

40906690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 40906690 is about 6395.8338002171. The cubic root of 40906690 is about 344.5599374143.

The spelling of 40906690 in words is "forty million, nine hundred six thousand, six hundred ninety".