87389406 has 24 divisors (see below), whose sum is σ = 203909160. Its totient is φ = 26888976.

The previous prime is 87389399. The next prime is 87389447. The reversal of 87389406 is 60498378.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186496 + ... + 186963.

It is an arithmetic number, because the mean of its divisors is an integer number (8496215).

Almost surely, 2^87389406 is an apocalyptic number.

87389406 is an abundant number, since it is smaller than the sum of its proper divisors (116519754).

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

87389406 is a wasteful number, since it uses less digits than its factorization.

87389406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373480 (or 373477 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 87389406 is about 9348.2300998638. The cubic root of 87389406 is about 443.7648803844.

The spelling of 87389406 in words is "eighty-seven million, three hundred eighty-nine thousand, four hundred six".