45409138 has 8 divisors (see below), whose sum is σ = 69954732. Its totient is φ = 22090896.

The previous prime is 45409129. The next prime is 45409151. The reversal of 45409138 is 83190454.

It can be written as a sum of positive squares in 2 ways, for example, as 41177889 + 4231249 = 6417^2 + 2057^2 .

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

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, 306745 + ... + 306892.

Almost surely, 2^45409138 is an apocalyptic number.

45409138 is a deficient number, since it is larger than the sum of its proper divisors (24545594).

45409138 is a wasteful number, since it uses less digits than its factorization.

45409138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613676.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 45409138 is about 6738.6302762505. The cubic root of 45409138 is about 356.7640504259.

The spelling of 45409138 in words is "forty-five million, four hundred nine thousand, one hundred thirty-eight".