40780867 has 2 divisors, whose sum is σ = 40780868. Its totient is φ = 40780866.

The previous prime is 40780849. The next prime is 40780877. The reversal of 40780867 is 76808704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40780867 - 2¹¹ = 40778819 is a prime.

It is a super-2 number, since 2×40780867² = 3326158226543378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40780877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20390433 + 20390434.

It is an arithmetic number, because the mean of its divisors is an integer number (20390434).

Almost surely, 2^40780867 is an apocalyptic number.

40780867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40780867 is an equidigital number, since it uses as much as digits as its factorization.

40780867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 40780867 is about 6385.9898997728. The cubic root of 40780867 is about 344.2063025862.

The spelling of 40780867 in words is "forty million, seven hundred eighty thousand, eight hundred sixty-seven".