1399957063 has 4 divisors (see below), whose sum is σ = 1432514248. Its totient is φ = 1367399880.

The previous prime is 1399957051. The next prime is 1399957067. The reversal of 1399957063 is 3607599931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1399957063 - 2¹⁷ = 1399825991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399957063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399957067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16278528 + ... + 16278613.

It is an arithmetic number, because the mean of its divisors is an integer number (358128562).

Almost surely, 2^1399957063 is an apocalyptic number.

1399957063 is a deficient number, since it is larger than the sum of its proper divisors (32557185).

1399957063 is an equidigital number, since it uses as much as digits as its factorization.

1399957063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32557184.

The product of its (nonzero) digits is 1377810, while the sum is 52.

The square root of 1399957063 is about 37416.0000935429. Note that the first 4 decimals coincide. The cubic root of 1399957063 is about 1118.6775055009.

The spelling of 1399957063 in words is "one billion, three hundred ninety-nine million, nine hundred fifty-seven thousand, sixty-three".