83979340 has 24 divisors (see below), whose sum is σ = 177922080. Its totient is φ = 33293568.

The previous prime is 83979289. The next prime is 83979353. The reversal of 83979340 is 4397938.

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, 16320 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (7413420).

Almost surely, 2^83979340 is an apocalyptic number.

It is an amenable number.

83979340 is an abundant number, since it is smaller than the sum of its proper divisors (93942740).

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

83979340 is a wasteful number, since it uses less digits than its factorization.

83979340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37281 (or 37279 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 83979340 is about 9164.0242251971. The cubic root of 83979340 is about 437.9160059394.

The spelling of 83979340 in words is "eighty-three million, nine hundred seventy-nine thousand, three hundred forty".