74298919 has 4 divisors (see below), whose sum is σ = 74322360. Its totient is φ = 74275480.

The previous prime is 74298893. The next prime is 74298943. The reversal of 74298919 is 91989247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74298919 - 2⁹ = 74298407 is a prime.

It is a super-2 number, since 2×74298919² = 11040658729137122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74298019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6052 + ... + 13609.

It is an arithmetic number, because the mean of its divisors is an integer number (18580590).

Almost surely, 2^74298919 is an apocalyptic number.

74298919 is a deficient number, since it is larger than the sum of its proper divisors (23441).

74298919 is a wasteful number, since it uses less digits than its factorization.

74298919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23440.

The product of its digits is 326592, while the sum is 49.

The square root of 74298919 is about 8619.6820707031. The cubic root of 74298919 is about 420.3981843592.

The spelling of 74298919 in words is "seventy-four million, two hundred ninety-eight thousand, nine hundred nineteen".