40390898 has 16 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 19175376.

The previous prime is 40390879. The next prime is 40390901. The reversal of 40390898 is 89809304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236 + ... + 9552.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^40390898 is an apocalyptic number.

40390898 is a deficient number, since it is larger than the sum of its proper divisors (23294542).

40390898 is a wasteful number, since it uses less digits than its factorization.

40390898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 40390898 is about 6355.3833873339. The cubic root of 40390898 is about 343.1056235609.

The spelling of 40390898 in words is "forty million, three hundred ninety thousand, eight hundred ninety-eight".