1399740730459 has 24 divisors (see below), whose sum is σ = 1615670758400. Its totient is φ = 1207805696640.

The previous prime is 1399740730403. The next prime is 1399740730511. The reversal of 1399740730459 is 9540370479931.

It is not a de Polignac number, because 1399740730459 - 2⁷ = 1399740730331 is a prime.

It is a super-2 number, since 2×1399740730459² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1399740730397 and 1399740730406.

It is not an unprimeable number, because it can be changed into a prime (1399740730159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3941319 + ... + 4281760.

Almost surely, 2^{1399740730459} is an apocalyptic number.

1399740730459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1399740730459 is a deficient number, since it is larger than the sum of its proper divisors (215930027941).

1399740730459 is a wasteful number, since it uses less digits than its factorization.

1399740730459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8223163 (or 8223146 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 61.

The spelling of 1399740730459 in words is "one trillion, three hundred ninety-nine billion, seven hundred forty million, seven hundred thirty thousand, four hundred fifty-nine".