40326401 has 2 divisors, whose sum is σ = 40326402. Its totient is φ = 40326400.

The previous prime is 40326359. The next prime is 40326439. The reversal of 40326401 is 10462304.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29170801 + 11155600 = 5401^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 40326401 - 2²² = 36132097 is a prime.

It is a super-2 number, since 2×40326401² = 3252437235225602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40326301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20163200 + 20163201.

It is an arithmetic number, because the mean of its divisors is an integer number (20163201).

Almost surely, 2^40326401 is an apocalyptic number.

It is an amenable number.

40326401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40326401 is an equidigital number, since it uses as much as digits as its factorization.

40326401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40326401 is about 6350.3071579255. The cubic root of 40326401 is about 342.9229002760.

Adding to 40326401 its reverse (10462304), we get a palindrome (50788705).

The spelling of 40326401 in words is "forty million, three hundred twenty-six thousand, four hundred one".