84397400 has 24 divisors (see below), whose sum is σ = 196224420. Its totient is φ = 33758880.

The previous prime is 84397399. The next prime is 84397409. The reversal of 84397400 is 479348.

It is a super-2 number, since 2×84397400² = 14245842253520000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84397409) 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 5 ways as a sum of consecutive naturals, for example, 210794 + ... + 211193.

Almost surely, 2^84397400 is an apocalyptic number.

It is an amenable number.

84397400 is an abundant number, since it is smaller than the sum of its proper divisors (111827020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84397400 is a wasteful number, since it uses less digits than its factorization.

84397400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422003 (or 421994 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 84397400 is about 9186.8057560830. The cubic root of 84397400 is about 438.6414709257.

The spelling of 84397400 in words is "eighty-four million, three hundred ninety-seven thousand, four hundred".