446691138 has 16 divisors (see below), whose sum is σ = 914159136. Its totient is φ = 145434240.

The previous prime is 446691137. The next prime is 446691173. The reversal of 446691138 is 831196644.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 446691138.

It is not an unprimeable number, because it can be changed into a prime (446691137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865423 + ... + 865938.

It is an arithmetic number, because the mean of its divisors is an integer number (57134946).

Almost surely, 2^446691138 is an apocalyptic number.

446691138 is an abundant number, since it is smaller than the sum of its proper divisors (467467998).

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

446691138 is a wasteful number, since it uses less digits than its factorization.

446691138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731409.

The product of its digits is 124416, while the sum is 42.

The square root of 446691138 is about 21135.0689140111. The cubic root of 446691138 is about 764.4265787034.

The spelling of 446691138 in words is "four hundred forty-six million, six hundred ninety-one thousand, one hundred thirty-eight".