44646889 has 6 divisors (see below), whose sum is σ = 51936234. Its totient is φ = 38268720.

The previous prime is 44646881. The next prime is 44646907. The reversal of 44646889 is 98864644.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 9659664 = 5915^2 + 3108^2 .

It is not a de Polignac number, because 44646889 - 2³ = 44646881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 911161 = 44646889 / (4 + 4 + 6 + 4 + 6 + 8 + 8 + 9).

It is not an unprimeable number, because it can be changed into a prime (44646881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455532 + ... + 455629.

It is an arithmetic number, because the mean of its divisors is an integer number (8656039).

Almost surely, 2^44646889 is an apocalyptic number.

44646889 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

44646889 is a deficient number, since it is larger than the sum of its proper divisors (7289345).

44646889 is an equidigital number, since it uses as much as digits as its factorization.

44646889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911175 (or 911168 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 44646889 is about 6681.8327575599. The cubic root of 44646889 is about 354.7565321295.

The spelling of 44646889 in words is "forty-four million, six hundred forty-six thousand, eight hundred eighty-nine".