40389804 has 72 divisors (see below), whose sum is σ = 125667360. Its totient is φ = 10651392.

The previous prime is 40389803. The next prime is 40389809. The reversal of 40389804 is 40898304.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40389803) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2889 + ... + 9440.

It is an arithmetic number, because the mean of its divisors is an integer number (1745380).

Almost surely, 2^40389804 is an apocalyptic number.

It is an amenable number.

40389804 is an abundant number, since it is smaller than the sum of its proper divisors (85277556).

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

40389804 is a wasteful number, since it uses less digits than its factorization.

40389804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359 (or 12354 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 40389804 is about 6355.2973179860. The cubic root of 40389804 is about 343.1025258255.

The spelling of 40389804 in words is "forty million, three hundred eighty-nine thousand, eight hundred four".