40077613 has 2 divisors, whose sum is σ = 40077614. Its totient is φ = 40077612.

The previous prime is 40077607. The next prime is 40077617. The reversal of 40077613 is 31677004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32695524 + 7382089 = 5718^2 + 2717^2 .

It is a cyclic number.

It is not a de Polignac number, because 40077613 - 2⁵ = 40077581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40077617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20038806 + 20038807.

It is an arithmetic number, because the mean of its divisors is an integer number (20038807).

Almost surely, 2^40077613 is an apocalyptic number.

It is an amenable number.

40077613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40077613 is an equidigital number, since it uses as much as digits as its factorization.

40077613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 40077613 is about 6330.6881932378. The cubic root of 40077613 is about 342.2162403652.

The spelling of 40077613 in words is "forty million, seventy-seven thousand, six hundred thirteen".