1397000849 has 2 divisors, whose sum is σ = 1397000850. Its totient is φ = 1397000848.

The previous prime is 1397000809. The next prime is 1397000851. The reversal of 1397000849 is 9480007931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1396890625 + 110224 = 37375^2 + 332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397000849 is a prime.

It is a super-2 number, since 2×1397000849² = 3903222744213441602, which contains 22 as substring.

Together with 1397000851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1397000809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698500424 + 698500425.

It is an arithmetic number, because the mean of its divisors is an integer number (698500425).

Almost surely, 2^1397000849 is an apocalyptic number.

It is an amenable number.

1397000849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397000849 is an equidigital number, since it uses as much as digits as its factorization.

1397000849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1397000849 is about 37376.4745394747. The cubic root of 1397000849 is about 1117.8895335698.

The spelling of 1397000849 in words is "one billion, three hundred ninety-seven million, eight hundred forty-nine", and thus it is an aban number.