1372959961 has 4 divisors (see below), whose sum is σ = 1417249024. Its totient is φ = 1328670900.

The previous prime is 1372959947. The next prime is 1372959971. The reversal of 1372959961 is 1699592731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1372959961 - 2¹¹ = 1372957913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1372959899 and 1372959908.

It is not an unprimeable number, because it can be changed into a prime (1372959971) 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, 22144485 + ... + 22144546.

It is an arithmetic number, because the mean of its divisors is an integer number (354312256).

Almost surely, 2^1372959961 is an apocalyptic number.

It is an amenable number.

1372959961 is a deficient number, since it is larger than the sum of its proper divisors (44289063).

1372959961 is an equidigital number, since it uses as much as digits as its factorization.

1372959961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44289062.

The product of its digits is 918540, while the sum is 52.

The square root of 1372959961 is about 37053.4743445200. The cubic root of 1372959961 is about 1111.4398329489.

The spelling of 1372959961 in words is "one billion, three hundred seventy-two million, nine hundred fifty-nine thousand, nine hundred sixty-one".