40787069 has 2 divisors, whose sum is σ = 40787070. Its totient is φ = 40787068.

The previous prime is 40787017. The next prime is 40787107. The reversal of 40787069 is 96078704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25381444 + 15405625 = 5038^2 + 3925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40787069 is a prime.

It is a super-2 number, since 2×40787069² = 3327169995221522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40787569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20393534 + 20393535.

It is an arithmetic number, because the mean of its divisors is an integer number (20393535).

Almost surely, 2^40787069 is an apocalyptic number.

It is an amenable number.

40787069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40787069 is an equidigital number, since it uses as much as digits as its factorization.

40787069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 40787069 is about 6386.4754755655. The cubic root of 40787069 is about 344.2237507952.

The spelling of 40787069 in words is "forty million, seven hundred eighty-seven thousand, sixty-nine".