86945121 has 12 divisors (see below), whose sum is σ = 132197520. Its totient is φ = 54912600.

The previous prime is 86945119. The next prime is 86945137. The reversal of 86945121 is 12154968.

It is not a de Polignac number, because 86945121 - 2¹ = 86945119 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (86945171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254055 + ... + 254396.

It is an arithmetic number, because the mean of its divisors is an integer number (11016460).

Almost surely, 2^86945121 is an apocalyptic number.

It is an amenable number.

86945121 is a deficient number, since it is larger than the sum of its proper divisors (45252399).

86945121 is a wasteful number, since it uses less digits than its factorization.

86945121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508476 (or 508473 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 86945121 is about 9324.4367658320. The cubic root of 86945121 is about 443.0115734297.

The spelling of 86945121 in words is "eighty-six million, nine hundred forty-five thousand, one hundred twenty-one".