253516939 has 8 divisors (see below), whose sum is σ = 273640752. Its totient is φ = 233482080.

The previous prime is 253516909. The next prime is 253516979. The reversal of 253516939 is 939615352.

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

It is not a de Polignac number, because 253516939 - 2¹³ = 253508747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253516895 and 253516904.

It is not an unprimeable number, because it can be changed into a prime (253516909) 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, 16252 + ... + 27769.

It is an arithmetic number, because the mean of its divisors is an integer number (34205094).

Almost surely, 2^253516939 is an apocalyptic number.

253516939 is a deficient number, since it is larger than the sum of its proper divisors (20123813).

253516939 is a wasteful number, since it uses less digits than its factorization.

253516939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44477.

The product of its digits is 218700, while the sum is 43.

The square root of 253516939 is about 15922.2152667272. The cubic root of 253516939 is about 632.9008236001.

The spelling of 253516939 in words is "two hundred fifty-three million, five hundred sixteen thousand, nine hundred thirty-nine".