445749156 has 30 divisors (see below), whose sum is σ = 1165277190. Its totient is φ = 148582944.

The previous prime is 445749151. The next prime is 445749167. The reversal of 445749156 is 651947544.

445749156 is a `hidden beast` number, since 4 + 457 + 49 + 156 = 666.

It can be written as a sum of positive squares in only one way, i.e., 324000000 + 121749156 = 18000^2 + 11034^2 .

It is not an unprimeable number, because it can be changed into a prime (445749151) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 687561 + ... + 688208.

It is an arithmetic number, because the mean of its divisors is an integer number (38842573).

Almost surely, 2^445749156 is an apocalyptic number.

It is an amenable number.

445749156 is an abundant number, since it is smaller than the sum of its proper divisors (719528034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445749156 is a wasteful number, since it uses less digits than its factorization.

445749156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375785 (or 1375774 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 445749156 is about 21112.7723428260. The cubic root of 445749156 is about 763.8888597776. Note that the first 4 decimals are identical.

The spelling of 445749156 in words is "four hundred forty-five million, seven hundred forty-nine thousand, one hundred fifty-six".