945631239 has 16 divisors (see below), whose sum is σ = 1525724928. Its totient is φ = 508574592.

The previous prime is 945631231. The next prime is 945631241. The reversal of 945631239 is 932136549.

It is a happy number.

It is not a de Polignac number, because 945631239 - 2³ = 945631231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945631239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945631231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324057 + ... + 1324770.

It is an arithmetic number, because the mean of its divisors is an integer number (95357808).

Almost surely, 2^945631239 is an apocalyptic number.

945631239 is a deficient number, since it is larger than the sum of its proper divisors (580093689).

945631239 is a wasteful number, since it uses less digits than its factorization.

945631239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648854.

The product of its digits is 174960, while the sum is 42.

The square root of 945631239 is about 30751.1176870045. The cubic root of 945631239 is about 981.5383443841.

The spelling of 945631239 in words is "nine hundred forty-five million, six hundred thirty-one thousand, two hundred thirty-nine".