44421534 has 40 divisors (see below), whose sum is σ = 102241128. Its totient is φ = 14405040.

The previous prime is 44421529. The next prime is 44421539. The reversal of 44421534 is 43512444.

It is a happy number.

44421534 is a `hidden beast` number, since 444 + 215 + 3 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (44421529) and next prime (44421539).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 44421498 and 44421507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44421539) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2289 + ... + 9699.

Almost surely, 2^44421534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44421534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51120564).

44421534 is an abundant number, since it is smaller than the sum of its proper divisors (57819594).

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

44421534 is a wasteful number, since it uses less digits than its factorization.

44421534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462 (or 7453 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 44421534 is about 6664.9481618389. The cubic root of 44421534 is about 354.1586476493.

Adding to 44421534 its reverse (43512444), we get a palindrome (87933978).

The spelling of 44421534 in words is "forty-four million, four hundred twenty-one thousand, five hundred thirty-four".