84131901 has 24 divisors (see below), whose sum is σ = 139128704. Its totient is φ = 47990880.

The previous prime is 84131897. The next prime is 84131909. The reversal of 84131901 is 10913148.

It is not a de Polignac number, because 84131901 - 2² = 84131897 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 (84131909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60231 + ... + 61611.

Almost surely, 2^84131901 is an apocalyptic number.

It is an amenable number.

84131901 is a deficient number, since it is larger than the sum of its proper divisors (54996803).

84131901 is a wasteful number, since it uses less digits than its factorization.

84131901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 84131901 is about 9172.3443568152. The cubic root of 84131901 is about 438.1810254408.

The spelling of 84131901 in words is "eighty-four million, one hundred thirty-one thousand, nine hundred one".