623009949 has 8 divisors (see below), whose sum is σ = 832556832. Its totient is φ = 414401520.

The previous prime is 623009921. The next prime is 623009963. The reversal of 623009949 is 949900326.

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

It is not a de Polignac number, because 623009949 - 2⁹ = 623009437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623009949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623009909) 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, 233062 + ... + 235719.

It is an arithmetic number, because the mean of its divisors is an integer number (104069604).

Almost surely, 2^623009949 is an apocalyptic number.

It is an amenable number.

623009949 is a deficient number, since it is larger than the sum of its proper divisors (209546883).

623009949 is a wasteful number, since it uses less digits than its factorization.

623009949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469227.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 623009949 is about 24960.1672470358. The cubic root of 623009949 is about 854.0795580075.

The spelling of 623009949 in words is "six hundred twenty-three million, nine thousand, nine hundred forty-nine".