673899393 has 4 divisors (see below), whose sum is σ = 898532528. Its totient is φ = 449266260.

The previous prime is 673899377. The next prime is 673899403. The reversal of 673899393 is 393998376.

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.

It is not a de Polignac number, because 673899393 - 2⁴ = 673899377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673889393) 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, 112316563 + ... + 112316568.

It is an arithmetic number, because the mean of its divisors is an integer number (224633132).

Almost surely, 2^673899393 is an apocalyptic number.

It is an amenable number.

673899393 is a deficient number, since it is larger than the sum of its proper divisors (224633135).

673899393 is a wasteful number, since it uses less digits than its factorization.

673899393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224633134.

The product of its digits is 6613488, while the sum is 57.

The square root of 673899393 is about 25959.5722807599. The cubic root of 673899393 is about 876.7282925607.

The spelling of 673899393 in words is "six hundred seventy-three million, eight hundred ninety-nine thousand, three hundred ninety-three".