45679493 has 4 divisors (see below), whose sum is σ = 48366540. Its totient is φ = 42992448.

The previous prime is 45679409. The next prime is 45679507. The reversal of 45679493 is 39497654.

It is a happy number.

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 39212644 + 6466849 = 6262^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 45679493 - 2⁸ = 45679237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45679993) 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, 1343498 + ... + 1343531.

It is an arithmetic number, because the mean of its divisors is an integer number (12091635).

Almost surely, 2^45679493 is an apocalyptic number.

It is an amenable number.

45679493 is a deficient number, since it is larger than the sum of its proper divisors (2687047).

45679493 is a wasteful number, since it uses less digits than its factorization.

45679493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687046.

The product of its digits is 816480, while the sum is 47.

The square root of 45679493 is about 6758.6605921588. The cubic root of 45679493 is about 357.4706788021.

The spelling of 45679493 in words is "forty-five million, six hundred seventy-nine thousand, four hundred ninety-three".