672219393 has 4 divisors (see below), whose sum is σ = 896292528. Its totient is φ = 448146260.

The previous prime is 672219371. The next prime is 672219419. The reversal of 672219393 is 393912276.

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 a cyclic number.

It is not a de Polignac number, because 672219393 - 2²¹ = 670122241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672219323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112036563 + ... + 112036568.

It is an arithmetic number, because the mean of its divisors is an integer number (224073132).

Almost surely, 2^672219393 is an apocalyptic number.

It is an amenable number.

672219393 is a deficient number, since it is larger than the sum of its proper divisors (224073135).

672219393 is a wasteful number, since it uses less digits than its factorization.

672219393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224073134.

The product of its digits is 122472, while the sum is 42.

The square root of 672219393 is about 25927.1940826615. The cubic root of 672219393 is about 875.9991386222. Note that the first 3 decimals are identical.

The spelling of 672219393 in words is "six hundred seventy-two million, two hundred nineteen thousand, three hundred ninety-three".