83928949 has 24 divisors (see below), whose sum is σ = 97396992. Its totient is φ = 72034560.

The previous prime is 83928941. The next prime is 83928953. The reversal of 83928949 is 94982938.

It is not a de Polignac number, because 83928949 - 2³ = 83928941 is a prime.

It is a Duffinian number.

Its product of digits (1119744) is a multiple of the sum of its prime divisors (384).

It is a junction number, because it is equal to n+sod(n) for n = 83928896 and 83928905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83928941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376252 + ... + 376474.

It is an arithmetic number, because the mean of its divisors is an integer number (4058208).

Almost surely, 2^83928949 is an apocalyptic number.

It is an amenable number.

83928949 is a deficient number, since it is larger than the sum of its proper divisors (13468043).

83928949 is a wasteful number, since it uses less digits than its factorization.

83928949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 384 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The square root of 83928949 is about 9161.2744200793. The cubic root of 83928949 is about 437.8283993105.

The spelling of 83928949 in words is "eighty-three million, nine hundred twenty-eight thousand, nine hundred forty-nine".