83209977 has 8 divisors (see below), whose sum is σ = 123274080. Its totient is φ = 55473300.

The previous prime is 83209943. The next prime is 83209979. The reversal of 83209977 is 77990238.

It is not a de Polignac number, because 83209977 - 2¹⁰ = 83208953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83209979) 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, 1540899 + ... + 1540952.

It is an arithmetic number, because the mean of its divisors is an integer number (15409260).

Almost surely, 2^83209977 is an apocalyptic number.

It is an amenable number.

83209977 is a deficient number, since it is larger than the sum of its proper divisors (40064103).

83209977 is a wasteful number, since it uses less digits than its factorization.

83209977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081860 (or 3081854 counting only the distinct ones).

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

The square root of 83209977 is about 9121.9502848897. The cubic root of 83209977 is about 436.5746025699.

The spelling of 83209977 in words is "eighty-three million, two hundred nine thousand, nine hundred seventy-seven".