42446644 has 24 divisors (see below), whose sum is σ = 77249088. Its totient is φ = 20391360.

The previous prime is 42446641. The next prime is 42446647. The reversal of 42446644 is 44664424.

It is an interprime number because it is at equal distance from previous prime (42446641) and next prime (42446647).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42446641) 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, 9057 + ... + 12919.

It is an arithmetic number, because the mean of its divisors is an integer number (3218712).

Almost surely, 2^42446644 is an apocalyptic number.

It is an amenable number.

42446644 is a deficient number, since it is larger than the sum of its proper divisors (34802444).

42446644 is a wasteful number, since it uses less digits than its factorization.

42446644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its digits is 73728, while the sum is 34.

The square root of 42446644 is about 6515.1089016224. The cubic root of 42446644 is about 348.8305020074.

The spelling of 42446644 in words is "forty-two million, four hundred forty-six thousand, six hundred forty-four".