1397796922 has 8 divisors (see below), whose sum is σ = 2098162836. Its totient is φ = 698409312.

The previous prime is 1397796901. The next prime is 1397796943. The reversal of 1397796922 is 2296977931.

It is an interprime number because it is at equal distance from previous prime (1397796901) and next prime (1397796943).

It can be written as a sum of positive squares in 2 ways, for example, as 1177244721 + 220552201 = 34311^2 + 14851^2 .

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

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, 240993 + ... + 246724.

Almost surely, 2^1397796922 is an apocalyptic number.

1397796922 is a deficient number, since it is larger than the sum of its proper divisors (700365914).

1397796922 is a wasteful number, since it uses less digits than its factorization.

1397796922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489152.

The product of its digits is 2571912, while the sum is 55.

The square root of 1397796922 is about 37387.1224086583. The cubic root of 1397796922 is about 1118.1018342495.

The spelling of 1397796922 in words is "one billion, three hundred ninety-seven million, seven hundred ninety-six thousand, nine hundred twenty-two".