445788427 has 12 divisors (see below), whose sum is σ = 527074896. Its totient is φ = 375837840.

The previous prime is 445788407. The next prime is 445788437. The reversal of 445788427 is 724887544.

It is a de Polignac number, because none of the positive numbers 2^k-445788427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445788407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71583 + ... + 77560.

It is an arithmetic number, because the mean of its divisors is an integer number (43922908).

Almost surely, 2^445788427 is an apocalyptic number.

445788427 is a deficient number, since it is larger than the sum of its proper divisors (81286469).

445788427 is a wasteful number, since it uses less digits than its factorization.

445788427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149218 (or 149211 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 49.

The square root of 445788427 is about 21113.7023517904. The cubic root of 445788427 is about 763.9112922736.

The spelling of 445788427 in words is "four hundred forty-five million, seven hundred eighty-eight thousand, four hundred twenty-seven".