84404331 has 12 divisors (see below), whose sum is σ = 133000920. Its totient is φ = 51154080.

The previous prime is 84404321. The next prime is 84404377. The reversal of 84404331 is 13340448.

It is not a de Polignac number, because 84404331 - 2⁶ = 84404267 is a prime.

It is a super-2 number, since 2×84404331² = 14248182183115122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84404295 and 84404304.

It is not an unprimeable number, because it can be changed into a prime (84404321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426186 + ... + 426383.

It is an arithmetic number, because the mean of its divisors is an integer number (11083410).

Almost surely, 2^84404331 is an apocalyptic number.

84404331 is a deficient number, since it is larger than the sum of its proper divisors (48596589).

84404331 is a wasteful number, since it uses less digits than its factorization.

84404331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852586 (or 852583 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 84404331 is about 9187.1829741222. The cubic root of 84404331 is about 438.6534781709.

Adding to 84404331 its reverse (13340448), we get a palindrome (97744779).

The spelling of 84404331 in words is "eighty-four million, four hundred four thousand, three hundred thirty-one".