416445649 has 3 divisors (see below), whose sum is σ = 416466057. Its totient is φ = 416425242.

The previous prime is 416445647. The next prime is 416445671. The reversal of 416445649 is 946544614.

The square root of 416445649 is 20407.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 416445649 - 2¹ = 416445647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416445641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10204 + ... + 30610.

It is an arithmetic number, because the mean of its divisors is an integer number (138822019).

Almost surely, 2^416445649 is an apocalyptic number.

416445649 is the 20407-th square number.

416445649 is the 10204-th centered octagonal number.

It is an amenable number.

416445649 is a deficient number, since it is larger than the sum of its proper divisors (20408).

416445649 is an frugal number, since it uses more digits than its factorization.

416445649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40814 (or 20407 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The cubic root of 416445649 is about 746.7687051194.

The spelling of 416445649 in words is "four hundred sixteen million, four hundred forty-five thousand, six hundred forty-nine".