1394270979 has 4 divisors (see below), whose sum is σ = 1859027976. Its totient is φ = 929513984.

The previous prime is 1394270957. The next prime is 1394270981. The reversal of 1394270979 is 9790724931.

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 1394270979 - 2⁹ = 1394270467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1394271979) 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, 232378494 + ... + 232378499.

It is an arithmetic number, because the mean of its divisors is an integer number (464756994).

Almost surely, 2^1394270979 is an apocalyptic number.

1394270979 is a deficient number, since it is larger than the sum of its proper divisors (464756997).

1394270979 is an equidigital number, since it uses as much as digits as its factorization.

1394270979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464756996.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 1394270979 is about 37339.9381226054. The cubic root of 1394270979 is about 1117.1609052781.

The spelling of 1394270979 in words is "one billion, three hundred ninety-four million, two hundred seventy thousand, nine hundred seventy-nine".