45442394 has 16 divisors (see below), whose sum is σ = 72641448. Its totient is φ = 21245952.

The previous prime is 45442381. The next prime is 45442399. The reversal of 45442394 is 49324454.

It can be written as a sum of positive squares in 4 ways, for example, as 45387169 + 55225 = 6737^2 + 235^2 .

It is a super-2 number, since 2×45442394² = 4130022344902472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45442399) 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, 1082 + ... + 9594.

Almost surely, 2^45442394 is an apocalyptic number.

45442394 is a deficient number, since it is larger than the sum of its proper divisors (27199054).

45442394 is a wasteful number, since it uses less digits than its factorization.

45442394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689.

The product of its digits is 69120, while the sum is 35.

The square root of 45442394 is about 6741.0973884079. The cubic root of 45442394 is about 356.8511228419.

The spelling of 45442394 in words is "forty-five million, four hundred forty-two thousand, three hundred ninety-four".