45979649 has 4 divisors (see below), whose sum is σ = 46453764. Its totient is φ = 45505536.

The previous prime is 45979631. The next prime is 45979663. The reversal of 45979649 is 94697954.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25684624 + 20295025 = 5068^2 + 4505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45979649 is a prime.

It is a super-2 number, since 2×45979649² = 4228256244326402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45979649.

It is not an unprimeable number, because it can be changed into a prime (45979699) 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, 236912 + ... + 237105.

It is an arithmetic number, because the mean of its divisors is an integer number (11613441).

Almost surely, 2^45979649 is an apocalyptic number.

It is an amenable number.

45979649 is a deficient number, since it is larger than the sum of its proper divisors (474115).

45979649 is an equidigital number, since it uses as much as digits as its factorization.

45979649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474114.

The product of its digits is 2449440, while the sum is 53.

The square root of 45979649 is about 6780.8295215261. The cubic root of 45979649 is about 358.2519397369.

It can be divided in two parts, 459 and 79649, that added together give a palindrome (80108).

The spelling of 45979649 in words is "forty-five million, nine hundred seventy-nine thousand, six hundred forty-nine".