1397700229 has 4 divisors (see below), whose sum is σ = 1397791980. Its totient is φ = 1397608480.

The previous prime is 1397700223. The next prime is 1397700299. The reversal of 1397700229 is 9220077931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1251532129 + 146168100 = 35377^2 + 12090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397700229 - 2³ = 1397700221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1397700191 and 1397700200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397700221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16942 + ... + 55519.

It is an arithmetic number, because the mean of its divisors is an integer number (349447995).

Almost surely, 2^1397700229 is an apocalyptic number.

It is an amenable number.

1397700229 is a deficient number, since it is larger than the sum of its proper divisors (91751).

1397700229 is an equidigital number, since it uses as much as digits as its factorization.

1397700229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91750.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 1397700229 is about 37385.8292538764. The cubic root of 1397700229 is about 1118.0760519841.

The spelling of 1397700229 in words is "one billion, three hundred ninety-seven million, seven hundred thousand, two hundred twenty-nine".