40084990 has 32 divisors (see below), whose sum is σ = 79035264. Its totient is φ = 14516640.

The previous prime is 40084973. The next prime is 40084999. The reversal of 40084990 is 9948004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40084999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33177 + ... + 34363.

It is an arithmetic number, because the mean of its divisors is an integer number (2469852).

Almost surely, 2^40084990 is an apocalyptic number.

40084990 is a deficient number, since it is larger than the sum of its proper divisors (38950274).

40084990 is a wasteful number, since it uses less digits than its factorization.

40084990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 40084990 is about 6331.2708045068. The cubic root of 40084990 is about 342.2372360794.

It can be divided in two parts, 4008 and 4990, that added together give a palindrome (8998).

The spelling of 40084990 in words is "forty million, eighty-four thousand, nine hundred ninety".