83961290 has 16 divisors (see below), whose sum is σ = 172720512. Its totient is φ = 28786704.

The previous prime is 83961287. The next prime is 83961313. The reversal of 83961290 is 9216938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599654 + ... + 599793.

It is an arithmetic number, because the mean of its divisors is an integer number (10795032).

Almost surely, 2^83961290 is an apocalyptic number.

83961290 is an abundant number, since it is smaller than the sum of its proper divisors (88759222).

83961290 is a wasteful number, since it uses less digits than its factorization.

83961290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199461.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 83961290 is about 9163.0393429255. The cubic root of 83961290 is about 437.8846293719.

The spelling of 83961290 in words is "eighty-three million, nine hundred sixty-one thousand, two hundred ninety".