44679781 has 2 divisors, whose sum is σ = 44679782. Its totient is φ = 44679780.

The previous prime is 44679779. The next prime is 44679787. The reversal of 44679781 is 18797644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34117281 + 10562500 = 5841^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 44679781 - 2¹ = 44679779 is a prime.

It is a super-2 number, since 2×44679781² = 3992565660415922, which contains 22 as substring.

Together with 44679779, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2699965 and since 44679781 and 2699965 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44679787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22339890 + 22339891.

It is an arithmetic number, because the mean of its divisors is an integer number (22339891).

Almost surely, 2^44679781 is an apocalyptic number.

It is an amenable number.

44679781 is a deficient number, since it is larger than the sum of its proper divisors (1).

44679781 is an equidigital number, since it uses as much as digits as its factorization.

44679781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 44679781 is about 6684.2936051613. The cubic root of 44679781 is about 354.8436288104.

The spelling of 44679781 in words is "forty-four million, six hundred seventy-nine thousand, seven hundred eighty-one".