1200899465 has 16 divisors (see below), whose sum is σ = 1606158720. Its totient is φ = 856615680.

The previous prime is 1200899459. The next prime is 1200899473. The reversal of 1200899465 is 5649980021.

It is not a de Polignac number, because 1200899465 - 2⁴ = 1200899449 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 370181 + ... + 373410.

It is an arithmetic number, because the mean of its divisors is an integer number (100384920).

Almost surely, 2^1200899465 is an apocalyptic number.

It is an amenable number.

1200899465 is a deficient number, since it is larger than the sum of its proper divisors (405259255).

1200899465 is a wasteful number, since it uses less digits than its factorization.

1200899465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743632.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1200899465 is about 34653.9963784843. The cubic root of 1200899465 is about 1062.9240095924.

The spelling of 1200899465 in words is "one billion, two hundred million, eight hundred ninety-nine thousand, four hundred sixty-five".