45139719 has 8 divisors (see below), whose sum is σ = 60626160. Its totient is φ = 29873216.

The previous prime is 45139711. The next prime is 45139733. The reversal of 45139719 is 91793154.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45139719 - 2³ = 45139711 is a prime.

It is a super-2 number, since 2×45139719² = 4075188462797922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45139711) 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, 54504 + ... + 55325.

It is an arithmetic number, because the mean of its divisors is an integer number (7578270).

Almost surely, 2^45139719 is an apocalyptic number.

45139719 is a deficient number, since it is larger than the sum of its proper divisors (15486441).

45139719 is a wasteful number, since it uses less digits than its factorization.

45139719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109969.

The product of its digits is 34020, while the sum is 39.

The square root of 45139719 is about 6718.6099008649. The cubic root of 45139719 is about 356.0570727628.

The spelling of 45139719 in words is "forty-five million, one hundred thirty-nine thousand, seven hundred nineteen".