4407278445 has 40 divisors (see below), whose sum is σ = 7923346200. Its totient is φ = 2343738240.

The previous prime is 4407278419. The next prime is 4407278453. The reversal of 4407278445 is 5448727044.

It can be written as a sum of positive squares in 4 ways, for example, as 70660836 + 4336617609 = 8406^2 + 65853^2 .

It is not a de Polignac number, because 4407278445 - 2⁵ = 4407278413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4407278445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 125755 + ... + 156935.

It is an arithmetic number, because the mean of its divisors is an integer number (198083655).

Almost surely, 2^4407278445 is an apocalyptic number.

4407278445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4407278445 is a deficient number, since it is larger than the sum of its proper divisors (3516067755).

4407278445 is a wasteful number, since it uses less digits than its factorization.

4407278445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31547 (or 31538 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 45.

The square root of 4407278445 is about 66387.3364806873. The cubic root of 4407278445 is about 1639.5455865997.

The spelling of 4407278445 in words is "four billion, four hundred seven million, two hundred seventy-eight thousand, four hundred forty-five".