39444492 has 24 divisors (see below), whose sum is σ = 92712816. Its totient is φ = 13051648.

The previous prime is 39444487. The next prime is 39444497. The reversal of 39444492 is 29444493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (39444487) and next prime (39444497).

It is a self number, because there is not a number n which added to its sum of digits gives 39444492.

It is not an unprimeable number, because it can be changed into a prime (39444497) 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, 10353 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (3863034).

Almost surely, 2^39444492 is an apocalyptic number.

It is an amenable number.

39444492 is an abundant number, since it is smaller than the sum of its proper divisors (53268324).

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

39444492 is a wasteful number, since it uses less digits than its factorization.

39444492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24137 (or 24135 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 39444492 is about 6280.4850131180. The cubic root of 39444492 is about 340.4046278420.

Subtracting from 39444492 its reverse (29444493), we obtain a palindrome (9999999).

The spelling of 39444492 in words is "thirty-nine million, four hundred forty-four thousand, four hundred ninety-two".