87849390 has 32 divisors (see below), whose sum is σ = 212365440. Its totient is φ = 23256864.

The previous prime is 87849389. The next prime is 87849403. The reversal of 87849390 is 9394878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6364 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (6636420).

Almost surely, 2^87849390 is an apocalyptic number.

87849390 is an abundant number, since it is smaller than the sum of its proper divisors (124516050).

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

87849390 is a wasteful number, since it uses less digits than its factorization.

87849390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21216.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 87849390 is about 9372.8005419938. The cubic root of 87849390 is about 444.5421204534.

The spelling of 87849390 in words is "eighty-seven million, eight hundred forty-nine thousand, three hundred ninety".