40744547 has 2 divisors, whose sum is σ = 40744548. Its totient is φ = 40744546.

The previous prime is 40744541. The next prime is 40744549. The reversal of 40744547 is 74544704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40744547 - 2¹² = 40740451 is a prime.

It is a super-2 number, since 2×40744547² = 3320236220470418, which contains 22 as substring.

Together with 40744549, 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 (40744541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20372273 + 20372274.

It is an arithmetic number, because the mean of its divisors is an integer number (20372274).

Almost surely, 2^40744547 is an apocalyptic number.

40744547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40744547 is an equidigital number, since it uses as much as digits as its factorization.

40744547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 40744547 is about 6383.1455411889. The cubic root of 40744547 is about 344.1040872826.

The spelling of 40744547 in words is "forty million, seven hundred forty-four thousand, five hundred forty-seven".