1399287115 has 8 divisors (see below), whose sum is σ = 1679427360. Its totient is φ = 1119241152.

The previous prime is 1399287107. The next prime is 1399287121. The reversal of 1399287115 is 5117829931.

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 1399287115 - 2³ = 1399287107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14751 + ... + 54919.

It is an arithmetic number, because the mean of its divisors is an integer number (209928420).

Almost surely, 2^1399287115 is an apocalyptic number.

1399287115 is a deficient number, since it is larger than the sum of its proper divisors (280140245).

1399287115 is an equidigital number, since it uses as much as digits as its factorization.

1399287115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47141.

The product of its digits is 136080, while the sum is 46.

The square root of 1399287115 is about 37407.0463281986. The cubic root of 1399287115 is about 1118.4990297082.

The spelling of 1399287115 in words is "one billion, three hundred ninety-nine million, two hundred eighty-seven thousand, one hundred fifteen".