1397406179 has 4 divisors (see below), whose sum is σ = 1504898976. Its totient is φ = 1289913384.

The previous prime is 1397406163. The next prime is 1397406187. The reversal of 1397406179 is 9716047931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1397406179 - 2⁴ = 1397406163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397406119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53746379 + ... + 53746404.

It is an arithmetic number, because the mean of its divisors is an integer number (376224744).

Almost surely, 2^1397406179 is an apocalyptic number.

1397406179 is a deficient number, since it is larger than the sum of its proper divisors (107492797).

1397406179 is a wasteful number, since it uses less digits than its factorization.

1397406179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107492796.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 1397406179 is about 37381.8964072183. The cubic root of 1397406179 is about 1117.9976390515.

The spelling of 1397406179 in words is "one billion, three hundred ninety-seven million, four hundred six thousand, one hundred seventy-nine".