1397003905 has 8 divisors (see below), whose sum is σ = 1828805184. Its totient is φ = 1016002800.

The previous prime is 1397003873. The next prime is 1397003911. The reversal of 1397003905 is 5093007931.

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

It is not a de Polignac number, because 1397003905 - 2⁵ = 1397003873 is a prime.

It is a Duffinian 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, 12699981 + ... + 12700090.

It is an arithmetic number, because the mean of its divisors is an integer number (228600648).

Almost surely, 2^1397003905 is an apocalyptic number.

It is an amenable number.

1397003905 is a deficient number, since it is larger than the sum of its proper divisors (431801279).

1397003905 is a wasteful number, since it uses less digits than its factorization.

1397003905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25400087.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 1397003905 is about 37376.5154207826. The cubic root of 1397003905 is about 1117.8903487132.

The spelling of 1397003905 in words is "one billion, three hundred ninety-seven million, three thousand, nine hundred five".