1399679995 has 8 divisors (see below), whose sum is σ = 1919561184. Its totient is φ = 959780544.

The previous prime is 1399679987. The next prime is 1399679999. The reversal of 1399679995 is 5999769931.

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 1399679995 - 2³ = 1399679987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399679995.

It is not an unprimeable number, because it can be changed into a prime (1399679999) 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, 19995394 + ... + 19995463.

It is an arithmetic number, because the mean of its divisors is an integer number (239945148).

Almost surely, 2^1399679995 is an apocalyptic number.

1399679995 is a deficient number, since it is larger than the sum of its proper divisors (519881189).

1399679995 is an equidigital number, since it uses as much as digits as its factorization.

1399679995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39990869.

The product of its digits is 37200870, while the sum is 67.

The square root of 1399679995 is about 37412.2973766648. The cubic root of 1399679995 is about 1118.6037008114.

The spelling of 1399679995 in words is "one billion, three hundred ninety-nine million, six hundred seventy-nine thousand, nine hundred ninety-five".