84398980 has 12 divisors (see below), whose sum is σ = 177237900. Its totient is φ = 33759584.

The previous prime is 84398971. The next prime is 84398989. The reversal of 84398980 is 8989348.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84398971) and next prime (84398989).

It can be written as a sum of positive squares in 2 ways, for example, as 31516996 + 52881984 = 5614^2 + 7272^2 .

It is not an unprimeable number, because it can be changed into a prime (84398989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109955 + ... + 2109994.

It is an arithmetic number, because the mean of its divisors is an integer number (14769825).

Almost surely, 2^84398980 is an apocalyptic number.

It is an amenable number.

84398980 is an abundant number, since it is smaller than the sum of its proper divisors (92838920).

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

84398980 is a wasteful number, since it uses less digits than its factorization.

84398980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219958 (or 4219956 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 84398980 is about 9186.8917485731. The cubic root of 84398980 is about 438.6442081712.

The spelling of 84398980 in words is "eighty-four million, three hundred ninety-eight thousand, nine hundred eighty".