1292944445 has 8 divisors (see below), whose sum is σ = 1670882136. Its totient is φ = 954789696.

The previous prime is 1292944417. The next prime is 1292944463. The reversal of 1292944445 is 5444492921.

It can be written as a sum of positive squares in 4 ways, for example, as 285643801 + 1007300644 = 16901^2 + 31738^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1292944445 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1292944396 and 1292944405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9945662 + ... + 9945791.

It is an arithmetic number, because the mean of its divisors is an integer number (208860267).

Almost surely, 2^1292944445 is an apocalyptic number.

It is an amenable number.

1292944445 is a deficient number, since it is larger than the sum of its proper divisors (377937691).

1292944445 is a wasteful number, since it uses less digits than its factorization.

1292944445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19891471.

The product of its digits is 414720, while the sum is 44.

The square root of 1292944445 is about 35957.5366926045. The cubic root of 1292944445 is about 1089.4148431738.

The spelling of 1292944445 in words is "one billion, two hundred ninety-two million, nine hundred forty-four thousand, four hundred forty-five".