40070549 has 2 divisors, whose sum is σ = 40070550. Its totient is φ = 40070548.

The previous prime is 40070521. The next prime is 40070567. The reversal of 40070549 is 94507004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37429924 + 2640625 = 6118^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 40070549 - 2⁸ = 40070293 is a prime.

It is a super-2 number, since 2×40070549² = 3211297794322802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40070599) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035274 + 20035275.

It is an arithmetic number, because the mean of its divisors is an integer number (20035275).

Almost surely, 2^40070549 is an apocalyptic number.

It is an amenable number.

40070549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40070549 is an equidigital number, since it uses as much as digits as its factorization.

40070549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40070549 is about 6330.1302514245. The cubic root of 40070549 is about 342.1961330669.

The spelling of 40070549 in words is "forty million, seventy thousand, five hundred forty-nine".