83909772 has 18 divisors (see below), whose sum is σ = 212105348. Its totient is φ = 27969912.

The previous prime is 83909767. The next prime is 83909803. The reversal of 83909772 is 27790938.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1165378 + ... + 1165449.

Almost surely, 2^83909772 is an apocalyptic number.

It is an amenable number.

83909772 is an abundant number, since it is smaller than the sum of its proper divisors (128195576).

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

83909772 is a wasteful number, since it uses less digits than its factorization.

83909772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330837 (or 2330832 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 83909772 is about 9160.2277264269. The cubic root of 83909772 is about 437.7950501706.

It can be divided in two parts, 83909 and 772, that added together give a square (84681 = 291²).

The spelling of 83909772 in words is "eighty-three million, nine hundred nine thousand, seven hundred seventy-two".