83404424 has 8 divisors (see below), whose sum is σ = 156383310. Its totient is φ = 41702208.

The previous prime is 83404421. The next prime is 83404427. The reversal of 83404424 is 42440438.

It is an interprime number because it is at equal distance from previous prime (83404421) and next prime (83404427).

It can be written as a sum of positive squares in only one way, i.e., 83356900 + 47524 = 9130^2 + 218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (83404421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5212769 + ... + 5212784.

Almost surely, 2^83404424 is an apocalyptic number.

It is an amenable number.

83404424 is a deficient number, since it is larger than the sum of its proper divisors (72978886).

83404424 is a wasteful number, since it uses less digits than its factorization.

83404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425559 (or 10425555 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 83404424 is about 9132.6022578452. The cubic root of 83404424 is about 436.9144039003.

The spelling of 83404424 in words is "eighty-three million, four hundred four thousand, four hundred twenty-four".