73890923 has 4 divisors (see below), whose sum is σ = 73977408. Its totient is φ = 73804440.

The previous prime is 73890877. The next prime is 73890931. The reversal of 73890923 is 32909837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32909837 = 353 ⋅93229.

It is a cyclic number.

It is not a de Polignac number, because 73890923 - 2¹⁰ = 73889899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73890023) 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, 41948 + ... + 43673.

It is an arithmetic number, because the mean of its divisors is an integer number (18494352).

Almost surely, 2^73890923 is an apocalyptic number.

73890923 is a deficient number, since it is larger than the sum of its proper divisors (86485).

73890923 is an equidigital number, since it uses as much as digits as its factorization.

73890923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86484.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 73890923 is about 8595.9829571725. The cubic root of 73890923 is about 419.6272637889.

The spelling of 73890923 in words is "seventy-three million, eight hundred ninety thousand, nine hundred twenty-three".