84938490 has 128 divisors (see below), whose sum is σ = 278853120. Its totient is φ = 17915904.

The previous prime is 84938479. The next prime is 84938501. The reversal of 84938490 is 9483948.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84938479) and next prime (84938501).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22842 + ... + 26298.

It is an arithmetic number, because the mean of its divisors is an integer number (2178540).

Almost surely, 2^84938490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84938490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139426560).

84938490 is an abundant number, since it is smaller than the sum of its proper divisors (193914630).

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

84938490 is a wasteful number, since it uses less digits than its factorization.

84938490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 84938490 is about 9216.2080054652. The cubic root of 84938490 is about 439.5768831939.

The spelling of 84938490 in words is "eighty-four million, nine hundred thirty-eight thousand, four hundred ninety".