1299722446 has 16 divisors (see below), whose sum is σ = 2162868480. Its totient is φ = 580769080.

The previous prime is 1299722407. The next prime is 1299722449. The reversal of 1299722446 is 6442279921.

It is a junction number, because it is equal to n+sod(n) for n = 1299722396 and 1299722405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299722449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499366 + ... + 501961.

It is an arithmetic number, because the mean of its divisors is an integer number (135179280).

Almost surely, 2^1299722446 is an apocalyptic number.

1299722446 is a deficient number, since it is larger than the sum of its proper divisors (863146034).

1299722446 is a wasteful number, since it uses less digits than its factorization.

1299722446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001399.

The product of its digits is 435456, while the sum is 46.

The square root of 1299722446 is about 36051.6635677190. The cubic root of 1299722446 is about 1091.3152056198.

The spelling of 1299722446 in words is "one billion, two hundred ninety-nine million, seven hundred twenty-two thousand, four hundred forty-six".