1397298005 has 8 divisors (see below), whose sum is σ = 1681430400. Its totient is φ = 1114723216.

The previous prime is 1397297987. The next prime is 1397298013. The reversal of 1397298005 is 5008927931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397298005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387425 + ... + 391014.

It is an arithmetic number, because the mean of its divisors is an integer number (210178800).

Almost surely, 2^1397298005 is an apocalyptic number.

It is an amenable number.

1397298005 is a deficient number, since it is larger than the sum of its proper divisors (284132395).

1397298005 is an equidigital number, since it uses as much as digits as its factorization.

1397298005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778803.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 1397298005 is about 37380.4495023803. The cubic root of 1397298005 is about 1117.9687900312.

The spelling of 1397298005 in words is "one billion, three hundred ninety-seven million, two hundred ninety-eight thousand, five".