74390719 has 8 divisors (see below), whose sum is σ = 84329840. Its totient is φ = 65054016.

The previous prime is 74390677. The next prime is 74390737. The reversal of 74390719 is 91709347.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74390719 is a prime.

It is a super-2 number, since 2×74390719² = 11067958146673922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74390749) 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, 150342 + ... + 150835.

It is an arithmetic number, because the mean of its divisors is an integer number (10541230).

Almost surely, 2^74390719 is an apocalyptic number.

74390719 is a deficient number, since it is larger than the sum of its proper divisors (9939121).

74390719 is a wasteful number, since it uses less digits than its factorization.

74390719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301209.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 74390719 is about 8625.0054492736. The cubic root of 74390719 is about 420.5712540369.

The spelling of 74390719 in words is "seventy-four million, three hundred ninety thousand, seven hundred nineteen".