44405001 has 6 divisors (see below), whose sum is σ = 64140570. Its totient is φ = 29603328.

The previous prime is 44404981. The next prime is 44405021. The reversal of 44405001 is 10050444.

It is an interprime number because it is at equal distance from previous prime (44404981) and next prime (44405021).

It can be written as a sum of positive squares in only one way, i.e., 31809600 + 12595401 = 5640^2 + 3549^2 .

It is not a de Polignac number, because 44405001 - 2⁹ = 44404489 is a prime.

It is a super-2 number, since 2×44405001² = 3943608227620002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44405021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2466936 + ... + 2466953.

It is an arithmetic number, because the mean of its divisors is an integer number (10690095).

Almost surely, 2^44405001 is an apocalyptic number.

It is an amenable number.

44405001 is a deficient number, since it is larger than the sum of its proper divisors (19735569).

44405001 is a wasteful number, since it uses less digits than its factorization.

44405001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933895 (or 4933892 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 44405001 is about 6663.7077516950. The cubic root of 44405001 is about 354.1147047612.

Adding to 44405001 its reverse (10050444), we get a palindrome (54455445).

The spelling of 44405001 in words is "forty-four million, four hundred five thousand, one".