4278209445 has 24 divisors (see below), whose sum is σ = 7423992576. Its totient is φ = 2279118048.

The previous prime is 4278209431. The next prime is 4278209459. The reversal of 4278209445 is 5449028724.

4278209445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4278209431) and next prime (4278209459).

It is not a de Polignac number, because 4278209445 - 2⁶ = 4278209381 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 4278209445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13677 + ... + 93506.

It is an arithmetic number, because the mean of its divisors is an integer number (309333024).

Almost surely, 2^4278209445 is an apocalyptic number.

4278209445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4278209445 is a deficient number, since it is larger than the sum of its proper divisors (3145783131).

4278209445 is a wasteful number, since it uses less digits than its factorization.

4278209445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108081 (or 108078 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 4278209445 is about 65408.0227877284. The cubic root of 4278209445 is about 1623.3818299550.

The spelling of 4278209445 in words is "four billion, two hundred seventy-eight million, two hundred nine thousand, four hundred forty-five".