87800413 has 6 divisors (see below), whose sum is σ = 88274174. Its totient is φ = 87328056.

The previous prime is 87800389. The next prime is 87800443. The reversal of 87800413 is 31400878.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62125924 + 25674489 = 7882^2 + 5067^2 .

It is not a de Polignac number, because 87800413 - 2⁵ = 87800381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87800443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155670 + ... + 156232.

Almost surely, 2^87800413 is an apocalyptic number.

It is an amenable number.

87800413 is a deficient number, since it is larger than the sum of its proper divisors (473761).

87800413 is an frugal number, since it uses more digits than its factorization.

87800413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 87800413 is about 9370.1874581035. The cubic root of 87800413 is about 444.4594927243.

The spelling of 87800413 in words is "eighty-seven million, eight hundred thousand, four hundred thirteen".