445722369 has 4 divisors (see below), whose sum is σ = 594296496. Its totient is φ = 297148244.

The previous prime is 445722353. The next prime is 445722377. The reversal of 445722369 is 963227544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445722369 - 2⁴ = 445722353 is a prime.

It is a super-2 number, since 2×445722369² = 397336860453944322, 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 445722369.

It is not an unprimeable number, because it can be changed into a prime (445722379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74287059 + ... + 74287064.

It is an arithmetic number, because the mean of its divisors is an integer number (148574124).

Almost surely, 2^445722369 is an apocalyptic number.

It is an amenable number.

445722369 is a deficient number, since it is larger than the sum of its proper divisors (148574127).

445722369 is a wasteful number, since it uses less digits than its factorization.

445722369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148574126.

The product of its digits is 362880, while the sum is 42.

The square root of 445722369 is about 21112.1379542670. The cubic root of 445722369 is about 763.8735576729.

The spelling of 445722369 in words is "four hundred forty-five million, seven hundred twenty-two thousand, three hundred sixty-nine".