40357013 has 2 divisors, whose sum is σ = 40357014. Its totient is φ = 40357012.

The previous prime is 40356991. The next prime is 40357021. The reversal of 40357013 is 31075304.

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., 36264484 + 4092529 = 6022^2 + 2023^2 .

It is a cyclic number.

It is not a de Polignac number, because 40357013 - 2⁶ = 40356949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40357013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40357033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20178506 + 20178507.

It is an arithmetic number, because the mean of its divisors is an integer number (20178507).

Almost surely, 2^40357013 is an apocalyptic number.

It is an amenable number.

40357013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40357013 is an equidigital number, since it uses as much as digits as its factorization.

40357013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 40357013 is about 6352.7169777978. The cubic root of 40357013 is about 343.0096499026.

The spelling of 40357013 in words is "forty million, three hundred fifty-seven thousand, thirteen".