44666819 has 2 divisors, whose sum is σ = 44666820. Its totient is φ = 44666818.

The previous prime is 44666813. The next prime is 44666849. The reversal of 44666819 is 91866644.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44666819 - 2¹⁶ = 44601283 is a prime.

It is a super-2 number, since 2×44666819² = 3990249439157522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44666819.

It is not a weakly prime, because it can be changed into another prime (44666813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22333409 + 22333410.

It is an arithmetic number, because the mean of its divisors is an integer number (22333410).

Almost surely, 2^44666819 is an apocalyptic number.

44666819 is a deficient number, since it is larger than the sum of its proper divisors (1).

44666819 is an equidigital number, since it uses as much as digits as its factorization.

44666819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 44666819 is about 6683.3239484556. The cubic root of 44666819 is about 354.8093110656.

The spelling of 44666819 in words is "forty-four million, six hundred sixty-six thousand, eight hundred nineteen".