84399946 has 16 divisors (see below), whose sum is σ = 128994120. Its totient is φ = 41409280.

The previous prime is 84399941. The next prime is 84399983. The reversal of 84399946 is 64999348.

It can be written as a sum of positive squares in 4 ways, for example, as 51279921 + 33120025 = 7161^2 + 5755^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84399893 and 84399902.

It is not an unprimeable number, because it can be changed into a prime (84399941) 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, 22656 + ... + 26116.

Almost surely, 2^84399946 is an apocalyptic number.

84399946 is a deficient number, since it is larger than the sum of its proper divisors (44594174).

84399946 is a wasteful number, since it uses less digits than its factorization.

84399946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689.

The product of its digits is 1679616, while the sum is 52.

The square root of 84399946 is about 9186.9443233319. The cubic root of 84399946 is about 438.6458816854.

The spelling of 84399946 in words is "eighty-four million, three hundred ninety-nine thousand, nine hundred forty-six".