623970389 has 8 divisors (see below), whose sum is σ = 713310720. Its totient is φ = 534680496.

The previous prime is 623970341. The next prime is 623970407. The reversal of 623970389 is 983079326.

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

It is not a de Polignac number, because 623970389 - 2⁸ = 623970133 is a prime.

It is a super-2 number, since 2×623970389² = 778678092697622642, 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 (623978389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19292 + ... + 40250.

It is an arithmetic number, because the mean of its divisors is an integer number (89163840).

Almost surely, 2^623970389 is an apocalyptic number.

It is an amenable number.

623970389 is a deficient number, since it is larger than the sum of its proper divisors (89340331).

623970389 is a wasteful number, since it uses less digits than its factorization.

623970389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25219.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 623970389 is about 24979.3992922168. The cubic root of 623970389 is about 854.5182192779.

The spelling of 623970389 in words is "six hundred twenty-three million, nine hundred seventy thousand, three hundred eighty-nine".