9944004451 has 4 divisors (see below), whose sum is σ = 9944213752. Its totient is φ = 9943795152.

The previous prime is 9944004439. The next prime is 9944004457. The reversal of 9944004451 is 1544004499.

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

It is a cyclic number.

It is not a de Polignac number, because 9944004451 - 2¹⁵ = 9943971683 is a prime.

It is a super-2 number, since 2×9944004451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9944004457) 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, 4711 + ... + 141103.

It is an arithmetic number, because the mean of its divisors is an integer number (2486053438).

Almost surely, 2^9944004451 is an apocalyptic number.

9944004451 is a deficient number, since it is larger than the sum of its proper divisors (209301).

9944004451 is a wasteful number, since it uses less digits than its factorization.

9944004451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209300.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 9944004451 is about 99719.6292161177. The cubic root of 9944004451 is about 2150.4058690050.

The spelling of 9944004451 in words is "nine billion, nine hundred forty-four million, four thousand, four hundred fifty-one".