1382870399 has 4 divisors (see below), whose sum is σ = 1384669440. Its totient is φ = 1381071360.

The previous prime is 1382870381. The next prime is 1382870441. The reversal of 1382870399 is 9930782831.

It is a happy number.

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 1382870399 - 2²⁰ = 1381821823 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 (1382870999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898367 + ... + 899904.

It is an arithmetic number, because the mean of its divisors is an integer number (346167360).

Almost surely, 2^1382870399 is an apocalyptic number.

1382870399 is a deficient number, since it is larger than the sum of its proper divisors (1799041).

1382870399 is an equidigital number, since it uses as much as digits as its factorization.

1382870399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799040.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 1382870399 is about 37186.9654448975. The cubic root of 1382870399 is about 1114.1076598321.

The spelling of 1382870399 in words is "one billion, three hundred eighty-two million, eight hundred seventy thousand, three hundred ninety-nine".