1387205799 has 16 divisors (see below), whose sum is σ = 2158814208. Its totient is φ = 775822752.

The previous prime is 1387205783. The next prime is 1387205801. The reversal of 1387205799 is 9975027831.

It is not a de Polignac number, because 1387205799 - 2⁴ = 1387205783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387205759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701752 + ... + 703725.

It is an arithmetic number, because the mean of its divisors is an integer number (134925888).

Almost surely, 2^1387205799 is an apocalyptic number.

1387205799 is a deficient number, since it is larger than the sum of its proper divisors (771608409).

1387205799 is a wasteful number, since it uses less digits than its factorization.

1387205799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405534.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 1387205799 is about 37245.2117593658. The cubic root of 1387205799 is about 1115.2707149648.

The spelling of 1387205799 in words is "one billion, three hundred eighty-seven million, two hundred five thousand, seven hundred ninety-nine".