797821239 has 24 divisors (see below), whose sum is σ = 1108346880. Its totient is φ = 510436080.

The previous prime is 797821231. The next prime is 797821247. The reversal of 797821239 is 932128797.

It is an interprime number because it is at equal distance from previous prime (797821231) and next prime (797821247).

It is not a de Polignac number, because 797821239 - 2³ = 797821231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797821231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365052 + ... + 367230.

It is an arithmetic number, because the mean of its divisors is an integer number (46181120).

Almost surely, 2^797821239 is an apocalyptic number.

797821239 is a deficient number, since it is larger than the sum of its proper divisors (310525641).

797821239 is a wasteful number, since it uses less digits than its factorization.

797821239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2340 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The square root of 797821239 is about 28245.7295710343. The cubic root of 797821239 is about 927.4742577793.

The spelling of 797821239 in words is "seven hundred ninety-seven million, eight hundred twenty-one thousand, two hundred thirty-nine".