40403401 has 2 divisors, whose sum is σ = 40403402. Its totient is φ = 40403400.

The previous prime is 40403393. The next prime is 40403417. The reversal of 40403401 is 10430404.

It is an a-pointer prime, because the next prime (40403417) can be obtained adding 40403401 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 524176 = 6315^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 40403401 - 2³ = 40403393 is a prime.

It is not a weakly prime, because it can be changed into another prime (40403471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201700 + 20201701.

It is an arithmetic number, because the mean of its divisors is an integer number (20201701).

Almost surely, 2^40403401 is an apocalyptic number.

It is an amenable number.

40403401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40403401 is an equidigital number, since it uses as much as digits as its factorization.

40403401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40403401 is about 6356.3669654922. The cubic root of 40403401 is about 343.1410226835.

Adding to 40403401 its reverse (10430404), we get a palindrome (50833805).

It can be divided in two parts, 40403 and 401, that added together give a palindrome (40804).

The spelling of 40403401 in words is "forty million, four hundred three thousand, four hundred one".