797971408 has 20 divisors (see below), whose sum is σ = 1664998468. Its totient is φ = 368294400.

The previous prime is 797971387. The next prime is 797971411. The reversal of 797971408 is 804179797.

It can be written as a sum of positive squares in 2 ways, for example, as 115089984 + 682881424 = 10728^2 + 26132^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1917993 + ... + 1918408.

Almost surely, 2^797971408 is an apocalyptic number.

It is an amenable number.

797971408 is an abundant number, since it is smaller than the sum of its proper divisors (867027060).

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

797971408 is a wasteful number, since it uses less digits than its factorization.

797971408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836422 (or 3836416 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 797971408 is about 28248.3877062037. The cubic root of 797971408 is about 927.5324450596.

The spelling of 797971408 in words is "seven hundred ninety-seven million, nine hundred seventy-one thousand, four hundred eight".