254643923 has 4 divisors (see below), whose sum is σ = 255786048. Its totient is φ = 253501800.

The previous prime is 254643911. The next prime is 254643937. The reversal of 254643923 is 329346452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254643923 - 2⁶ = 254643859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254643943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570728 + ... + 571173.

It is an arithmetic number, because the mean of its divisors is an integer number (63946512).

Almost surely, 2^254643923 is an apocalyptic number.

254643923 is a deficient number, since it is larger than the sum of its proper divisors (1142125).

254643923 is a wasteful number, since it uses less digits than its factorization.

254643923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142124.

The product of its digits is 155520, while the sum is 38.

The square root of 254643923 is about 15957.5663244744. The cubic root of 254643923 is about 633.8372696158.

The spelling of 254643923 in words is "two hundred fifty-four million, six hundred forty-three thousand, nine hundred twenty-three".