428009044749 has 32 divisors (see below), whose sum is σ = 692075102208. Its totient is φ = 231721560000.

The previous prime is 428009044739. The next prime is 428009044783. The reversal of 428009044749 is 947440900824.

It is not a de Polignac number, because 428009044749 - 2²¹ = 428006947597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428009044739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16078477 + ... + 16105074.

It is an arithmetic number, because the mean of its divisors is an integer number (21627346944).

Almost surely, 2^428009044749 is an apocalyptic number.

It is an amenable number.

428009044749 is a deficient number, since it is larger than the sum of its proper divisors (264066057459).

428009044749 is a wasteful number, since it uses less digits than its factorization.

428009044749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32183609.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 428009044749 in words is "four hundred twenty-eight billion, nine million, forty-four thousand, seven hundred forty-nine".