1420657444 has 6 divisors (see below), whose sum is σ = 2486150534. Its totient is φ = 710328720.

The previous prime is 1420657397. The next prime is 1420657451. The reversal of 1420657444 is 4447560241.

It can be written as a sum of positive squares in only one way, i.e., 1327727844 + 92929600 = 36438^2 + 9640^2 .

It is a super-2 number, since 2×1420657444² = 4036535146385226272, which contains 22 as substring.

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, 177582177 + ... + 177582184.

Almost surely, 2^1420657444 is an apocalyptic number.

It is an amenable number.

1420657444 is a deficient number, since it is larger than the sum of its proper divisors (1065493090).

1420657444 is a wasteful number, since it uses less digits than its factorization.

1420657444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355164365 (or 355164363 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 37.

The square root of 1420657444 is about 37691.6097294875. The cubic root of 1420657444 is about 1124.1643028855.

The spelling of 1420657444 in words is "one billion, four hundred twenty million, six hundred fifty-seven thousand, four hundred forty-four".