1387150799 has 4 divisors (see below), whose sum is σ = 1387336680. Its totient is φ = 1386964920.

The previous prime is 1387150777. The next prime is 1387150801. The reversal of 1387150799 is 9970517831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1387150799 - 2¹² = 1387146703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387150759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81257 + ... + 96834.

It is an arithmetic number, because the mean of its divisors is an integer number (346834170).

Almost surely, 2^1387150799 is an apocalyptic number.

1387150799 is a deficient number, since it is larger than the sum of its proper divisors (185881).

1387150799 is an equidigital number, since it uses as much as digits as its factorization.

1387150799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185880.

The product of its (nonzero) digits is 476280, while the sum is 50.

The square root of 1387150799 is about 37244.4734021036. The cubic root of 1387150799 is about 1115.2559753350.

The spelling of 1387150799 in words is "one billion, three hundred eighty-seven million, one hundred fifty thousand, seven hundred ninety-nine".