1399499434 has 8 divisors (see below), whose sum is σ = 2103844068. Its totient is φ = 698218080.

The previous prime is 1399499383. The next prime is 1399499441. The reversal of 1399499434 is 4349949931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1200830409 + 198669025 = 34653^2 + 14095^2 .

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, 764677 + ... + 766504.

Almost surely, 2^1399499434 is an apocalyptic number.

1399499434 is a deficient number, since it is larger than the sum of its proper divisors (704344634).

1399499434 is a wasteful number, since it uses less digits than its factorization.

1399499434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531640.

The product of its digits is 3779136, while the sum is 55.

The square root of 1399499434 is about 37409.8841751749. The cubic root of 1399499434 is about 1118.5555981762. Note that the first 4 decimals are identical.

The spelling of 1399499434 in words is "one billion, three hundred ninety-nine million, four hundred ninety-nine thousand, four hundred thirty-four".