445154890 has 8 divisors (see below), whose sum is σ = 801278820. Its totient is φ = 178061952.

The previous prime is 445154887. The next prime is 445154891. The reversal of 445154890 is 98451544.

It can be written as a sum of positive squares in 2 ways, for example, as 379431441 + 65723449 = 19479^2 + 8107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (445154891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22257735 + ... + 22257754.

Almost surely, 2^445154890 is an apocalyptic number.

445154890 is a deficient number, since it is larger than the sum of its proper divisors (356123930).

445154890 is a wasteful number, since it uses less digits than its factorization.

445154890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44515496.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 445154890 is about 21098.6940354137. The cubic root of 445154890 is about 763.5492404685.

The spelling of 445154890 in words is "four hundred forty-five million, one hundred fifty-four thousand, eight hundred ninety".