1387059869 has 16 divisors (see below), whose sum is σ = 1664873280. Its totient is φ = 1141620480.

The previous prime is 1387059841. The next prime is 1387059881. The reversal of 1387059869 is 9689507831.

It is not a de Polignac number, because 1387059869 - 2⁸ = 1387059613 is a prime.

It is a super-2 number, since 2×1387059869² = 3847870160380594322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387059809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160967 + ... + 169364.

It is an arithmetic number, because the mean of its divisors is an integer number (104054580).

Almost surely, 2^1387059869 is an apocalyptic number.

1387059869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1387059869 is a deficient number, since it is larger than the sum of its proper divisors (277813411).

1387059869 is a wasteful number, since it uses less digits than its factorization.

1387059869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330380.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 1387059869 is about 37243.2526640733. The cubic root of 1387059869 is about 1115.2316058524.

The spelling of 1387059869 in words is "one billion, three hundred eighty-seven million, fifty-nine thousand, eight hundred sixty-nine".