83439408 has 40 divisors (see below), whose sum is σ = 232134448. Its totient is φ = 25673472.

The previous prime is 83439407. The next prime is 83439427. The reversal of 83439408 is 80493438.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (83439407) 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, 66235 + ... + 67482.

Almost surely, 2^83439408 is an apocalyptic number.

It is an amenable number.

83439408 is an abundant number, since it is smaller than the sum of its proper divisors (148695040).

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

83439408 is a wasteful number, since it uses less digits than its factorization.

83439408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133741 (or 133735 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 83439408 is about 9134.5173928347. The cubic root of 83439408 is about 436.9754833019.

The spelling of 83439408 in words is "eighty-three million, four hundred thirty-nine thousand, four hundred eight".