40939090 has 16 divisors (see below), whose sum is σ = 74105280. Its totient is φ = 16283440.

The previous prime is 40939079. The next prime is 40939117. The reversal of 40939090 is 9093904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9646 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (4631580).

Almost surely, 2^40939090 is an apocalyptic number.

40939090 is a deficient number, since it is larger than the sum of its proper divisors (33166190).

40939090 is a wasteful number, since it uses less digits than its factorization.

40939090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23057.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 40939090 is about 6398.3661977102. The cubic root of 40939090 is about 344.6508825700.

The spelling of 40939090 in words is "forty million, nine hundred thirty-nine thousand, ninety".