40089420 has 72 divisors (see below), whose sum is σ = 138981024. Its totient is φ = 9163008.

The previous prime is 40089409. The next prime is 40089433. The reversal of 40089420 is 2498004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14649 + ... + 17168.

It is an arithmetic number, because the mean of its divisors is an integer number (1930292).

Almost surely, 2^40089420 is an apocalyptic number.

It is an amenable number.

40089420 is an abundant number, since it is smaller than the sum of its proper divisors (98891604).

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

40089420 is a wasteful number, since it uses less digits than its factorization.

40089420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31839 (or 31834 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40089420 is about 6331.6206456167. The cubic root of 40089420 is about 342.2498430853.

The spelling of 40089420 in words is "forty million, eighty-nine thousand, four hundred twenty".