1399397330 has 16 divisors (see below), whose sum is σ = 2667087000. Its totient is φ = 526831872.

The previous prime is 1399397327. The next prime is 1399397333. The reversal of 1399397330 is 337939931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1399397327) and next prime (1399397333).

It can be written as a sum of positive squares in 4 ways, for example, as 921668881 + 477728449 = 30359^2 + 21857^2 .

It is a super-2 number, since 2×1399397330² = 3916625774422257800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1399397333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4115705 + ... + 4116044.

Almost surely, 2^1399397330 is an apocalyptic number.

1399397330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399397330 is a deficient number, since it is larger than the sum of its proper divisors (1267689670).

1399397330 is a wasteful number, since it uses less digits than its factorization.

1399397330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8231773.

The product of its (nonzero) digits is 413343, while the sum is 47.

The square root of 1399397330 is about 37408.5194842031. The cubic root of 1399397330 is about 1118.5283951693.

The spelling of 1399397330 in words is "one billion, three hundred ninety-nine million, three hundred ninety-seven thousand, three hundred thirty".