44302421 has 4 divisors (see below), whose sum is σ = 44414412. Its totient is φ = 44190432.

The previous prime is 44302411. The next prime is 44302429. The reversal of 44302421 is 12420344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37039396 + 7263025 = 6086^2 + 2695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44302421 is a prime.

It is a super-2 number, since 2×44302421² = 3925409012922482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44302393 and 44302402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44302429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55400 + ... + 56193.

It is an arithmetic number, because the mean of its divisors is an integer number (11103603).

Almost surely, 2^44302421 is an apocalyptic number.

It is an amenable number.

44302421 is a deficient number, since it is larger than the sum of its proper divisors (111991).

44302421 is a wasteful number, since it uses less digits than its factorization.

44302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111990.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44302421 is about 6656.0063852133. The cubic root of 44302421 is about 353.8418143729.

Adding to 44302421 its reverse (12420344), we get a palindrome (56722765).

The spelling of 44302421 in words is "forty-four million, three hundred two thousand, four hundred twenty-one".