1398445963 has 4 divisors (see below), whose sum is σ = 1399064560. Its totient is φ = 1397827368.

The previous prime is 1398445933. The next prime is 1398445967. The reversal of 1398445963 is 3695448931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3695448931 = 47 ⋅78626573.

It is a cyclic number.

It is not a de Polignac number, because 1398445963 - 2¹³ = 1398437771 is a prime.

It is a super-2 number, since 2×1398445963² = 3911302222861994738, which contains 22 as substring.

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 1398445963.

It is not an unprimeable number, because it can be changed into a prime (1398445967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305895 + ... + 310432.

It is an arithmetic number, because the mean of its divisors is an integer number (349766140).

Almost surely, 2^1398445963 is an apocalyptic number.

1398445963 is a deficient number, since it is larger than the sum of its proper divisors (618597).

1398445963 is an equidigital number, since it uses as much as digits as its factorization.

1398445963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618596.

The product of its digits is 2799360, while the sum is 52.

The square root of 1398445963 is about 37395.8014087143. The cubic root of 1398445963 is about 1118.2748640674.

The spelling of 1398445963 in words is "one billion, three hundred ninety-eight million, four hundred forty-five thousand, nine hundred sixty-three".