1399963 has 2 divisors, whose sum is σ = 1399964. Its totient is φ = 1399962.

The previous prime is 1399943. The next prime is 1399999. The reversal of 1399963 is 3699931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1399963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1399913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699981 + 699982.

It is an arithmetic number, because the mean of its divisors is an integer number (699982).

2^1399963 is an apocalyptic number.

1399963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399963 is an equidigital number, since it uses as much as digits as its factorization.

1399963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39366, while the sum is 40.

The square root of 1399963 is about 1183.2003211629. The cubic root of 1399963 is about 111.8679086878.

Subtracting 1399963 from its reverse (3699931), we obtain a cube (2299968 = 132³).

The spelling of 1399963 in words is "one million, three hundred ninety-nine thousand, nine hundred sixty-three".