86921401 has 8 divisors (see below), whose sum is σ = 100967744. Its totient is φ = 73282320.

The previous prime is 86921389. The next prime is 86921407. The reversal of 86921401 is 10412968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86921401 - 2⁵ = 86921369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86921407) 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, 101355 + ... + 102208.

It is an arithmetic number, because the mean of its divisors is an integer number (12620968).

Almost surely, 2^86921401 is an apocalyptic number.

It is an amenable number.

86921401 is a deficient number, since it is larger than the sum of its proper divisors (14046343).

86921401 is a wasteful number, since it uses less digits than its factorization.

86921401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203631.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 86921401 is about 9323.1647523789. The cubic root of 86921401 is about 442.9712829179.

The spelling of 86921401 in words is "eighty-six million, nine hundred twenty-one thousand, four hundred one".