40189902 has 16 divisors (see below), whose sum is σ = 84610560. Its totient is φ = 12691512.

The previous prime is 40189889. The next prime is 40189957. The reversal of 40189902 is 20998104.

It is a congruent number.

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, 176158 + ... + 176385.

It is an arithmetic number, because the mean of its divisors is an integer number (5288160).

Almost surely, 2^40189902 is an apocalyptic number.

40189902 is an abundant number, since it is smaller than the sum of its proper divisors (44420658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40189902 is a wasteful number, since it uses less digits than its factorization.

40189902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352567.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 40189902 is about 6339.5506149884. The cubic root of 40189902 is about 342.5355481955.

The spelling of 40189902 in words is "forty million, one hundred eighty-nine thousand, nine hundred two".