84906399 has 8 divisors (see below), whose sum is σ = 113708160. Its totient is φ = 56354456.

The previous prime is 84906397. The next prime is 84906413. The reversal of 84906399 is 99360948.

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 84906399 - 2¹ = 84906397 is a prime.

It is a super-2 number, since 2×84906399² = 14418193182294402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84906397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61659 + ... + 63020.

It is an arithmetic number, because the mean of its divisors is an integer number (14213520).

Almost surely, 2^84906399 is an apocalyptic number.

84906399 is a deficient number, since it is larger than the sum of its proper divisors (28801761).

84906399 is a wasteful number, since it uses less digits than its factorization.

84906399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124909.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 84906399 is about 9214.4668321070. The cubic root of 84906399 is about 439.5215167019.

The spelling of 84906399 in words is "eighty-four million, nine hundred six thousand, three hundred ninety-nine".