45139419 has 24 divisors (see below), whose sum is σ = 70616000. Its totient is φ = 27620352.

The previous prime is 45139397. The next prime is 45139429. The reversal of 45139419 is 91493154.

It is a happy number.

It is not a de Polignac number, because 45139419 - 2¹¹ = 45137371 is a prime.

It is a super-2 number, since 2×45139419² = 4075134295315122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45139429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21582 + ... + 23580.

Almost surely, 2^45139419 is an apocalyptic number.

45139419 is a deficient number, since it is larger than the sum of its proper divisors (25476581).

45139419 is a wasteful number, since it uses less digits than its factorization.

45139419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211 (or 2208 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 45139419 is about 6718.5875747809. The cubic root of 45139419 is about 356.0562839722.

The spelling of 45139419 in words is "forty-five million, one hundred thirty-nine thousand, four hundred nineteen".