40547369 has 2 divisors, whose sum is σ = 40547370. Its totient is φ = 40547368.

The previous prime is 40547327. The next prime is 40547393. The reversal of 40547369 is 96374504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37945600 + 2601769 = 6160^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 40547369 - 2⁸ = 40547113 is a prime.

It is a super-3 number, since 3×40547369³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40547399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20273684 + 20273685.

It is an arithmetic number, because the mean of its divisors is an integer number (20273685).

Almost surely, 2^40547369 is an apocalyptic number.

It is an amenable number.

40547369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40547369 is an equidigital number, since it uses as much as digits as its factorization.

40547369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 40547369 is about 6367.6816032211. The cubic root of 40547369 is about 343.5481069449.

It can be divided in two parts, 405 and 47369, that added together give a palindrome (47774).

The spelling of 40547369 in words is "forty million, five hundred forty-seven thousand, three hundred sixty-nine".