1397279867 has 8 divisors (see below), whose sum is σ = 1404923520. Its totient is φ = 1389648960.

The previous prime is 1397279837. The next prime is 1397279899. The reversal of 1397279867 is 7689727931.

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

It is a cyclic number.

It is not a de Polignac number, because 1397279867 - 2¹⁰ = 1397278843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397279837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285017 + ... + 289877.

It is an arithmetic number, because the mean of its divisors is an integer number (175615440).

Almost surely, 2^1397279867 is an apocalyptic number.

1397279867 is a deficient number, since it is larger than the sum of its proper divisors (7643653).

1397279867 is a wasteful number, since it uses less digits than its factorization.

1397279867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373.

The product of its digits is 8001504, while the sum is 59.

The square root of 1397279867 is about 37380.2068881380. The cubic root of 1397279867 is about 1117.9639526461.

It can be divided in two parts, 13972 and 79867, that added together give a palindrome (93839).

The spelling of 1397279867 in words is "one billion, three hundred ninety-seven million, two hundred seventy-nine thousand, eight hundred sixty-seven".