83974390 has 16 divisors (see below), whose sum is σ = 160045632. Its totient is φ = 31613824.

The previous prime is 83974361. The next prime is 83974391. The reversal of 83974390 is 9347938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83974391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246814 + ... + 247153.

It is an arithmetic number, because the mean of its divisors is an integer number (10002852).

Almost surely, 2^83974390 is an apocalyptic number.

83974390 is a deficient number, since it is larger than the sum of its proper divisors (76071242).

83974390 is a wasteful number, since it uses less digits than its factorization.

83974390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493991.

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

The square root of 83974390 is about 9163.7541433629. The cubic root of 83974390 is about 437.9074017326.

The spelling of 83974390 in words is "eighty-three million, nine hundred seventy-four thousand, three hundred ninety".