87970401 has 8 divisors (see below), whose sum is σ = 130326560. Its totient is φ = 58646916.

The previous prime is 87970391. The next prime is 87970409. The reversal of 87970401 is 10407978.

It is not a de Polignac number, because 87970401 - 2⁷ = 87970273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87970409) 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 7 ways as a sum of consecutive naturals, for example, 1629055 + ... + 1629108.

It is an arithmetic number, because the mean of its divisors is an integer number (16290820).

Almost surely, 2^87970401 is an apocalyptic number.

It is an amenable number.

87970401 is a deficient number, since it is larger than the sum of its proper divisors (42356159).

87970401 is a wasteful number, since it uses less digits than its factorization.

87970401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258172 (or 3258166 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 87970401 is about 9379.2537549637. The cubic root of 87970401 is about 444.7461431377.

The spelling of 87970401 in words is "eighty-seven million, nine hundred seventy thousand, four hundred one".