1444828457 has 8 divisors (see below), whose sum is σ = 1553232000. Its totient is φ = 1339660944.

The previous prime is 1444828447. The next prime is 1444828471. The reversal of 1444828457 is 7548284441.

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

It is a cyclic number.

It is not a de Polignac number, because 1444828457 - 2²⁰ = 1443779881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444828447) 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, 808082 + ... + 809867.

It is an arithmetic number, because the mean of its divisors is an integer number (194154000).

Almost surely, 2^1444828457 is an apocalyptic number.

It is an amenable number.

1444828457 is a deficient number, since it is larger than the sum of its proper divisors (108403543).

1444828457 is a wasteful number, since it uses less digits than its factorization.

1444828457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618015.

The product of its digits is 1146880, while the sum is 47.

The square root of 1444828457 is about 38010.8991869437. The cubic root of 1444828457 is about 1130.5039799061.

The spelling of 1444828457 in words is "one billion, four hundred forty-four million, eight hundred twenty-eight thousand, four hundred fifty-seven".