239551940 has 24 divisors (see below), whose sum is σ = 503639640. Its totient is φ = 95710208.

The previous prime is 239551933. The next prime is 239551951. The reversal of 239551940 is 49155932.

It can be written as a sum of positive squares in 4 ways, for example, as 602176 + 238949764 = 776^2 + 15458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 239551894 and 239551903.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12134 + ... + 25026.

It is an arithmetic number, because the mean of its divisors is an integer number (20984985).

Almost surely, 2^239551940 is an apocalyptic number.

239551940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239551940 is an abundant number, since it is smaller than the sum of its proper divisors (264087700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

239551940 is a wasteful number, since it uses less digits than its factorization.

239551940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831 (or 13829 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 239551940 is about 15477.4655547993. The cubic root of 239551940 is about 621.0595306667.

The spelling of 239551940 in words is "two hundred thirty-nine million, five hundred fifty-one thousand, nine hundred forty".