1420865944 has 8 divisors (see below), whose sum is σ = 2664123660. Its totient is φ = 710432968.

The previous prime is 1420865939. The next prime is 1420865951. The reversal of 1420865944 is 4495680241.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1420865944² = 4037720061638022272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1420865944.

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 as a sum of consecutive naturals, namely, 88804114 + ... + 88804129.

Almost surely, 2^1420865944 is an apocalyptic number.

It is an amenable number.

1420865944 is a deficient number, since it is larger than the sum of its proper divisors (1243257716).

1420865944 is a wasteful number, since it uses less digits than its factorization.

1420865944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177608249 (or 177608245 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 1420865944 is about 37694.3754955564. The cubic root of 1420865944 is about 1124.2192954508.

The spelling of 1420865944 in words is "one billion, four hundred twenty million, eight hundred sixty-five thousand, nine hundred forty-four".