916539390 has 72 divisors (see below), whose sum is σ = 2580453720. Its totient is φ = 225605952.

The previous prime is 916539373. The next prime is 916539391. The reversal of 916539390 is 93935619.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916539391) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14920 + ... + 45339.

It is an arithmetic number, because the mean of its divisors is an integer number (35839635).

Almost surely, 2^916539390 is an apocalyptic number.

916539390 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

916539390 is an abundant number, since it is smaller than the sum of its proper divisors (1663914330).

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

916539390 is a wasteful number, since it uses less digits than its factorization.

916539390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60298 (or 60282 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The square root of 916539390 is about 30274.4015630367. The cubic root of 916539390 is about 971.3678191225.

The spelling of 916539390 in words is "nine hundred sixteen million, five hundred thirty-nine thousand, three hundred ninety".