23149009 has 8 divisors (see below), whose sum is σ = 25062912. Its totient is φ = 21254160.

The previous prime is 23149003. The next prime is 23149037. The reversal of 23149009 is 90094132.

It is a happy number.

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 23149009 - 2¹¹ = 23146961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23149003) 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, 2179 + ... + 7144.

It is an arithmetic number, because the mean of its divisors is an integer number (3132864).

Almost surely, 2^23149009 is an apocalyptic number.

It is an amenable number.

23149009 is a deficient number, since it is larger than the sum of its proper divisors (1913903).

23149009 is a wasteful number, since it uses less digits than its factorization.

23149009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9527.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 23149009 is about 4811.3417047639. The cubic root of 23149009 is about 284.9995239553. Note that the first 3 decimals are identical.

The spelling of 23149009 in words is "twenty-three million, one hundred forty-nine thousand, nine".