1399506964 has 6 divisors (see below), whose sum is σ = 2449137194. Its totient is φ = 699753480.

The previous prime is 1399506961. The next prime is 1399506973. The reversal of 1399506964 is 4696059931.

It can be written as a sum of positive squares in only one way, i.e., 1040707600 + 358799364 = 32260^2 + 18942^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399506961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174938367 + ... + 174938374.

Almost surely, 2^1399506964 is an apocalyptic number.

It is an amenable number.

1399506964 is a deficient number, since it is larger than the sum of its proper divisors (1049630230).

1399506964 is a wasteful number, since it uses less digits than its factorization.

1399506964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349876745 (or 349876743 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 1399506964 is about 37409.9848168908. The cubic root of 1399506964 is about 1118.5576043003.

The spelling of 1399506964 in words is "one billion, three hundred ninety-nine million, five hundred six thousand, nine hundred sixty-four".