40513673 has 2 divisors, whose sum is σ = 40513674. Its totient is φ = 40513672.

The previous prime is 40513663. The next prime is 40513691. The reversal of 40513673 is 37631504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35904064 + 4609609 = 5992^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 40513673 - 2⁴ = 40513657 is a prime.

It is not a weakly prime, because it can be changed into another prime (40513633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256836 + 20256837.

It is an arithmetic number, because the mean of its divisors is an integer number (20256837).

Almost surely, 2^40513673 is an apocalyptic number.

It is an amenable number.

40513673 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513673 is an equidigital number, since it uses as much as digits as its factorization.

40513673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 40513673 is about 6365.0351923615. The cubic root of 40513673 is about 343.4529145359.

The spelling of 40513673 in words is "forty million, five hundred thirteen thousand, six hundred seventy-three".