84238407 has 16 divisors (see below), whose sum is σ = 136143360. Its totient is φ = 51053400.

The previous prime is 84238391. The next prime is 84238409. The reversal of 84238407 is 70483248.

It is not a de Polignac number, because 84238407 - 2⁴ = 84238391 is a prime.

It is a super-2 number, since 2×84238407² = 14192218427795298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84238409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141519 + ... + 142112.

It is an arithmetic number, because the mean of its divisors is an integer number (8508960).

Almost surely, 2^84238407 is an apocalyptic number.

84238407 is a deficient number, since it is larger than the sum of its proper divisors (51904953).

84238407 is a wasteful number, since it uses less digits than its factorization.

84238407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283651 (or 283645 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 84238407 is about 9178.1483426669. The cubic root of 84238407 is about 438.3658512054.

The spelling of 84238407 in words is "eighty-four million, two hundred thirty-eight thousand, four hundred seven".