82975749 has 4 divisors (see below), whose sum is σ = 110634336. Its totient is φ = 55317164.

The previous prime is 82975741. The next prime is 82975751. The reversal of 82975749 is 94757928.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82975749 - 2³ = 82975741 is a prime.

It is a super-2 number, since 2×82975749² = 13769949844222002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82975741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13829289 + ... + 13829294.

It is an arithmetic number, because the mean of its divisors is an integer number (27658584).

Almost surely, 2^82975749 is an apocalyptic number.

It is an amenable number.

82975749 is a deficient number, since it is larger than the sum of its proper divisors (27658587).

82975749 is a wasteful number, since it uses less digits than its factorization.

82975749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27658586.

The product of its digits is 1270080, while the sum is 51.

The square root of 82975749 is about 9109.1025353764. The cubic root of 82975749 is about 436.1645792418.

The spelling of 82975749 in words is "eighty-two million, nine hundred seventy-five thousand, seven hundred forty-nine".