73379909 has 4 divisors (see below), whose sum is σ = 73422240. Its totient is φ = 73337580.

The previous prime is 73379863. The next prime is 73379963. The reversal of 73379909 is 90997337.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90997337 = 211 ⋅431267.

It is a cyclic number.

It is not a de Polignac number, because 73379909 - 2²⁰ = 72331333 is a prime.

It is a super-2 number, since 2×73379909² = 10769222089696562, 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 (73379989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18449 + ... + 22070.

It is an arithmetic number, because the mean of its divisors is an integer number (18355560).

Almost surely, 2^73379909 is an apocalyptic number.

It is an amenable number.

73379909 is a deficient number, since it is larger than the sum of its proper divisors (42331).

73379909 is a wasteful number, since it uses less digits than its factorization.

73379909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42330.

The product of its (nonzero) digits is 321489, while the sum is 47.

The square root of 73379909 is about 8566.2073871697. The cubic root of 73379909 is about 418.6576740392.

The spelling of 73379909 in words is "seventy-three million, three hundred seventy-nine thousand, nine hundred nine".