253889999 has 8 divisors (see below), whose sum is σ = 283726800. Its totient is φ = 225179200.

The previous prime is 253889959. The next prime is 253890029. The reversal of 253889999 is 999988352.

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 253889999 - 2⁸ = 253889743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253889959) 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, 281024 + ... + 281925.

It is an arithmetic number, because the mean of its divisors is an integer number (35465850).

Almost surely, 2^253889999 is an apocalyptic number.

253889999 is a deficient number, since it is larger than the sum of its proper divisors (29836801).

253889999 is a wasteful number, since it uses less digits than its factorization.

253889999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563001.

The product of its digits is 12597120, while the sum is 62.

The square root of 253889999 is about 15933.9260384878. The cubic root of 253889999 is about 633.2111174760.

The spelling of 253889999 in words is "two hundred fifty-three million, eight hundred eighty-nine thousand, nine hundred ninety-nine".