74139519 has 8 divisors (see below), whose sum is σ = 99066240. Its totient is φ = 49319576.

The previous prime is 74139493. The next prime is 74139529. The reversal of 74139519 is 91593147.

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 74139519 - 2¹² = 74135423 is a prime.

It is a super-2 number, since 2×74139519² = 10993336555102722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74139529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25059 + ... + 27860.

It is an arithmetic number, because the mean of its divisors is an integer number (12383280).

Almost surely, 2^74139519 is an apocalyptic number.

74139519 is a deficient number, since it is larger than the sum of its proper divisors (24926721).

74139519 is a wasteful number, since it uses less digits than its factorization.

74139519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53389.

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

The square root of 74139519 is about 8610.4308254582. The cubic root of 74139519 is about 420.0973300509.

The spelling of 74139519 in words is "seventy-four million, one hundred thirty-nine thousand, five hundred nineteen".