44782421 has 2 divisors, whose sum is σ = 44782422. Its totient is φ = 44782420.

The previous prime is 44782391. The next prime is 44782459. The reversal of 44782421 is 12428744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 8614225 = 6014^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 44782421 - 2¹⁰ = 44781397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_2705855 and since 44782421 and 2705855 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 (44782021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22391210 + 22391211.

It is an arithmetic number, because the mean of its divisors is an integer number (22391211).

Almost surely, 2^44782421 is an apocalyptic number.

It is an amenable number.

44782421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44782421 is an equidigital number, since it uses as much as digits as its factorization.

44782421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 32.

The square root of 44782421 is about 6691.9669006952. The cubic root of 44782421 is about 355.1151408565.

The spelling of 44782421 in words is "forty-four million, seven hundred eighty-two thousand, four hundred twenty-one".