82939690 has 16 divisors (see below), whose sum is σ = 152764128. Its totient is φ = 32404176.

The previous prime is 82939639. The next prime is 82939691. The reversal of 82939690 is 9693928.

It is a happy number.

It is a super-2 number, since 2×82939690² = 13757984354592200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82939690.

It is not an unprimeable number, because it can be changed into a prime (82939691) 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, 96012 + ... + 96871.

It is an arithmetic number, because the mean of its divisors is an integer number (9547758).

Almost surely, 2^82939690 is an apocalyptic number.

82939690 is a deficient number, since it is larger than the sum of its proper divisors (69824438).

82939690 is a wasteful number, since it uses less digits than its factorization.

82939690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192933.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 82939690 is about 9107.1230363930. The cubic root of 82939690 is about 436.1013883393.

The spelling of 82939690 in words is "eighty-two million, nine hundred thirty-nine thousand, six hundred ninety".