40441697 has 2 divisors, whose sum is σ = 40441698. Its totient is φ = 40441696.

The previous prime is 40441663. The next prime is 40441699. The reversal of 40441697 is 79614404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37957921 + 2483776 = 6161^2 + 1576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40441697 is a prime.

Together with 40441699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40441699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220848 + 20220849.

It is an arithmetic number, because the mean of its divisors is an integer number (20220849).

Almost surely, 2^40441697 is an apocalyptic number.

It is an amenable number.

40441697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40441697 is an equidigital number, since it uses as much as digits as its factorization.

40441697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40441697 is about 6359.3786646181. The cubic root of 40441697 is about 343.2494028250.

The spelling of 40441697 in words is "forty million, four hundred forty-one thousand, six hundred ninety-seven".