239472397 has 12 divisors (see below), whose sum is σ = 245743680. Its totient is φ = 233346960.

The previous prime is 239472383. The next prime is 239472419. The reversal of 239472397 is 793274932.

It is a happy number.

It is not a de Polignac number, because 239472397 - 2¹¹ = 239470349 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 (239472377) 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 11 ways as a sum of consecutive naturals, for example, 516988 + ... + 517450.

It is an arithmetic number, because the mean of its divisors is an integer number (20478640).

Almost surely, 2^239472397 is an apocalyptic number.

It is an amenable number.

239472397 is a deficient number, since it is larger than the sum of its proper divisors (6271283).

239472397 is an equidigital number, since it uses as much as digits as its factorization.

239472397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 663 counting only the distinct ones).

The product of its digits is 571536, while the sum is 46.

The square root of 239472397 is about 15474.8957023949. The cubic root of 239472397 is about 620.9907823094.

The spelling of 239472397 in words is "two hundred thirty-nine million, four hundred seventy-two thousand, three hundred ninety-seven".