87986401 has 4 divisors (see below), whose sum is σ = 90824704. Its totient is φ = 85148100.

The previous prime is 87986317. The next prime is 87986417. The reversal of 87986401 is 10468978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87986401 - 2⁷ = 87986273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87986501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419105 + ... + 1419166.

It is an arithmetic number, because the mean of its divisors is an integer number (22706176).

Almost surely, 2^87986401 is an apocalyptic number.

It is an amenable number.

87986401 is a deficient number, since it is larger than the sum of its proper divisors (2838303).

87986401 is a wasteful number, since it uses less digits than its factorization.

87986401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838302.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 87986401 is about 9380.1066625066. The cubic root of 87986401 is about 444.7731048841.

The spelling of 87986401 in words is "eighty-seven million, nine hundred eighty-six thousand, four hundred one".