1397122899 has 8 divisors (see below), whose sum is σ = 1863160272. Its totient is φ = 931250400.

The previous prime is 1397122889. The next prime is 1397122907. The reversal of 1397122899 is 9982217931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397122899 - 2²¹ = 1395025747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397122829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19864 + ... + 56469.

It is an arithmetic number, because the mean of its divisors is an integer number (232895034).

Almost surely, 2^1397122899 is an apocalyptic number.

1397122899 is a deficient number, since it is larger than the sum of its proper divisors (466037373).

1397122899 is an equidigital number, since it uses as much as digits as its factorization.

1397122899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82437.

The product of its digits is 489888, while the sum is 51.

The square root of 1397122899 is about 37378.1072153206. The cubic root of 1397122899 is about 1117.9220877004.

The spelling of 1397122899 in words is "one billion, three hundred ninety-seven million, one hundred twenty-two thousand, eight hundred ninety-nine".