1397029077 has 24 divisors (see below), whose sum is σ = 2138363136. Its totient is φ = 875857536.

The previous prime is 1397029069. The next prime is 1397029079. The reversal of 1397029077 is 7709207931.

It is not a de Polignac number, because 1397029077 - 2³ = 1397029069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397029079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236838 + ... + 242664.

It is an arithmetic number, because the mean of its divisors is an integer number (89098464).

Almost surely, 2^1397029077 is an apocalyptic number.

1397029077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1397029077 is a deficient number, since it is larger than the sum of its proper divisors (741334059).

1397029077 is a wasteful number, since it uses less digits than its factorization.

1397029077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7417 (or 7414 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 1397029077 is about 37376.8521547762. The cubic root of 1397029077 is about 1117.8970629313.

The spelling of 1397029077 in words is "one billion, three hundred ninety-seven million, twenty-nine thousand, seventy-seven".