623949893 has 8 divisors (see below), whose sum is σ = 716781888. Its totient is φ = 532041984.

The previous prime is 623949847. The next prime is 623949919. The reversal of 623949893 is 398949326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 623949893 - 2¹² = 623945797 is a prime.

It is a super-2 number, since 2×623949893² = 778626937949422898, 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 (623949593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229571 + ... + 232272.

It is an arithmetic number, because the mean of its divisors is an integer number (89597736).

Almost surely, 2^623949893 is an apocalyptic number.

It is an amenable number.

623949893 is a deficient number, since it is larger than the sum of its proper divisors (92831995).

623949893 is a wasteful number, since it uses less digits than its factorization.

623949893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462043.

The product of its digits is 2519424, while the sum is 53.

The square root of 623949893 is about 24978.9890307835. The cubic root of 623949893 is about 854.5088628525.

The spelling of 623949893 in words is "six hundred twenty-three million, nine hundred forty-nine thousand, eight hundred ninety-three".