40135547 has 2 divisors, whose sum is σ = 40135548. Its totient is φ = 40135546.

The previous prime is 40135523. The next prime is 40135549. The reversal of 40135547 is 74553104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40135547 is a prime.

It is a super-2 number, since 2×40135547² = 3221724265978418, which contains 22 as substring.

Together with 40135549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40135549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067773 + 20067774.

It is an arithmetic number, because the mean of its divisors is an integer number (20067774).

Almost surely, 2^40135547 is an apocalyptic number.

40135547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40135547 is an equidigital number, since it uses as much as digits as its factorization.

40135547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 40135547 is about 6335.2621887338. The cubic root of 40135547 is about 342.3810573187.

The spelling of 40135547 in words is "forty million, one hundred thirty-five thousand, five hundred forty-seven".