40508990 has 8 divisors (see below), whose sum is σ = 72916200. Its totient is φ = 16203592.

The previous prime is 40508989. The next prime is 40509019. The reversal of 40508990 is 9980504.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40508990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025440 + ... + 2025459.

It is an arithmetic number, because the mean of its divisors is an integer number (9114525).

Almost surely, 2^40508990 is an apocalyptic number.

40508990 is a deficient number, since it is larger than the sum of its proper divisors (32407210).

40508990 is a wasteful number, since it uses less digits than its factorization.

40508990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050906.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 40508990 is about 6364.6673125938. The cubic root of 40508990 is about 343.4396807158.

The spelling of 40508990 in words is "forty million, five hundred eight thousand, nine hundred ninety".