44401381 has 2 divisors, whose sum is σ = 44401382. Its totient is φ = 44401380.

The previous prime is 44401367. The next prime is 44401411. The reversal of 44401381 is 18310444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43678881 + 722500 = 6609^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 44401381 - 2¹⁷ = 44270309 is a prime.

It is a super-2 number, since 2×44401381² = 3942965269414322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44401321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22200690 + 22200691.

It is an arithmetic number, because the mean of its divisors is an integer number (22200691).

Almost surely, 2^44401381 is an apocalyptic number.

It is an amenable number.

44401381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44401381 is an equidigital number, since it uses as much as digits as its factorization.

44401381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 44401381 is about 6663.4361256037. The cubic root of 44401381 is about 354.1050817455.

The spelling of 44401381 in words is "forty-four million, four hundred one thousand, three hundred eighty-one".