1399158291 has 8 divisors (see below), whose sum is σ = 1872184464. Its totient is φ = 929452160.

The previous prime is 1399158263. The next prime is 1399158329. The reversal of 1399158291 is 1928519931.

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 1399158291 - 2⁶ = 1399158227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1399158291.

It is not an unprimeable number, because it can be changed into a prime (1399158491) 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, 829026 + ... + 830711.

It is an arithmetic number, because the mean of its divisors is an integer number (234023058).

Almost surely, 2^1399158291 is an apocalyptic number.

1399158291 is a deficient number, since it is larger than the sum of its proper divisors (473026173).

1399158291 is a wasteful number, since it uses less digits than its factorization.

1399158291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660021.

The product of its digits is 174960, while the sum is 48.

The square root of 1399158291 is about 37405.3243669935. The cubic root of 1399158291 is about 1118.4647041483.

The spelling of 1399158291 in words is "one billion, three hundred ninety-nine million, one hundred fifty-eight thousand, two hundred ninety-one".