1399717263 has 8 divisors (see below), whose sum is σ = 2132902528. Its totient is φ = 799838424.

The previous prime is 1399717261. The next prime is 1399717283. The reversal of 1399717263 is 3627179931.

It is a happy number.

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

It is not a de Polignac number, because 1399717263 - 2¹ = 1399717261 is a prime.

It is a super-2 number, since 2×1399717263² = 3918416832680422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399717261) 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, 33326581 + ... + 33326622.

It is an arithmetic number, because the mean of its divisors is an integer number (266612816).

Almost surely, 2^1399717263 is an apocalyptic number.

1399717263 is a deficient number, since it is larger than the sum of its proper divisors (733185265).

1399717263 is an equidigital number, since it uses as much as digits as its factorization.

1399717263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66653213.

The product of its digits is 428652, while the sum is 48.

The square root of 1399717263 is about 37412.7954448742. The cubic root of 1399717263 is about 1118.6136287361.

The spelling of 1399717263 in words is "one billion, three hundred ninety-nine million, seven hundred seventeen thousand, two hundred sixty-three".