40377613 has 2 divisors, whose sum is σ = 40377614. Its totient is φ = 40377612.

The previous prime is 40377563. The next prime is 40377637. The reversal of 40377613 is 31677304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34892649 + 5484964 = 5907^2 + 2342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40377613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40077613) 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, 20188806 + 20188807.

It is an arithmetic number, because the mean of its divisors is an integer number (20188807).

Almost surely, 2^40377613 is an apocalyptic number.

It is an amenable number.

40377613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40377613 is an equidigital number, since it uses as much as digits as its factorization.

40377613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 40377613 is about 6354.3381244627. The cubic root of 40377613 is about 343.0680023948.

The spelling of 40377613 in words is "forty million, three hundred seventy-seven thousand, six hundred thirteen".