44817421 has 8 divisors (see below), whose sum is σ = 49341600. Its totient is φ = 40368240.

The previous prime is 44817419. The next prime is 44817467. The reversal of 44817421 is 12471844.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44817421 - 2¹ = 44817419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44817121) 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, 17491 + ... + 19888.

It is an arithmetic number, because the mean of its divisors is an integer number (6167700).

Almost surely, 2^44817421 is an apocalyptic number.

It is an amenable number.

44817421 is a deficient number, since it is larger than the sum of its proper divisors (4524179).

44817421 is a wasteful number, since it uses less digits than its factorization.

44817421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37499.

The product of its digits is 7168, while the sum is 31.

The square root of 44817421 is about 6694.5814656332. The cubic root of 44817421 is about 355.2076309680.

The spelling of 44817421 in words is "forty-four million, eight hundred seventeen thousand, four hundred twenty-one".