40401013 has 2 divisors, whose sum is σ = 40401014. Its totient is φ = 40401012.

The previous prime is 40401001. The next prime is 40401043. The reversal of 40401013 is 31010404.

40401013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25331089 + 15069924 = 5033^2 + 3882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40401013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40400984 and 40401002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40401043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200506 + 20200507.

It is an arithmetic number, because the mean of its divisors is an integer number (20200507).

Almost surely, 2^40401013 is an apocalyptic number.

It is an amenable number.

40401013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401013 is an equidigital number, since it uses as much as digits as its factorization.

40401013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40401013 is about 6356.1791195655. The cubic root of 40401013 is about 343.1342622220.

Adding to 40401013 its reverse (31010404), we get a palindrome (71411417).

The spelling of 40401013 in words is "forty million, four hundred one thousand, thirteen".