1399871434 has 8 divisors (see below), whose sum is σ = 2261330820. Its totient is φ = 646094496.

The previous prime is 1399871419. The next prime is 1399871449. The reversal of 1399871434 is 4341789931.

It is an interprime number because it is at equal distance from previous prime (1399871419) and next prime (1399871449).

It can be written as a sum of positive squares in 2 ways, for example, as 971257225 + 428614209 = 31165^2 + 20703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26920579 + ... + 26920630.

Almost surely, 2^1399871434 is an apocalyptic number.

1399871434 is a deficient number, since it is larger than the sum of its proper divisors (861459386).

1399871434 is a wasteful number, since it uses less digits than its factorization.

1399871434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53841224.

The product of its digits is 653184, while the sum is 49.

The square root of 1399871434 is about 37414.8557928532. The cubic root of 1399871434 is about 1118.6546968992.

The spelling of 1399871434 in words is "one billion, three hundred ninety-nine million, eight hundred seventy-one thousand, four hundred thirty-four".