45439494 has 8 divisors (see below), whose sum is σ = 90879000. Its totient is φ = 15146496.

The previous prime is 45439477. The next prime is 45439501. The reversal of 45439494 is 49493454.

It is a sphenic number, since it is the product of 3 distinct primes.

45439494 is an admirable number.

It is a super-2 number, since 2×45439494² = 4129495229952072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3786619 + ... + 3786630.

It is an arithmetic number, because the mean of its divisors is an integer number (11359875).

Almost surely, 2^45439494 is an apocalyptic number.

45439494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45439494 is a wasteful number, since it uses less digits than its factorization.

45439494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573254.

The product of its digits is 311040, while the sum is 42.

The square root of 45439494 is about 6740.8822864667. The cubic root of 45439494 is about 356.8435316172.

The spelling of 45439494 in words is "forty-five million, four hundred thirty-nine thousand, four hundred ninety-four".