40464013 has 2 divisors, whose sum is σ = 40464014. Its totient is φ = 40464012.

The previous prime is 40464001. The next prime is 40464023. The reversal of 40464013 is 31046404.

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., 40220964 + 243049 = 6342^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 40464013 - 2⁵ = 40463981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40464023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20232006 + 20232007.

It is an arithmetic number, because the mean of its divisors is an integer number (20232007).

Almost surely, 2^40464013 is an apocalyptic number.

It is an amenable number.

40464013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40464013 is an equidigital number, since it uses as much as digits as its factorization.

40464013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40464013 is about 6361.1329965659. The cubic root of 40464013 is about 343.3125269908.

It can be divided in two parts, 4046401 and 3, that added together give a palindrome (4046404).

The spelling of 40464013 in words is "forty million, four hundred sixty-four thousand, thirteen".