40277869 has 2 divisors, whose sum is σ = 40277870. Its totient is φ = 40277868.

The previous prime is 40277849. The next prime is 40277927. The reversal of 40277869 is 96877204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 2762244 = 6125^2 + 1662^2 .

It is a cyclic number.

It is not a de Polignac number, because 40277869 - 2⁵ = 40277837 is a prime.

It is a super-2 number, since 2×40277869² = 3244613462362322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40277849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20138934 + 20138935.

It is an arithmetic number, because the mean of its divisors is an integer number (20138935).

Almost surely, 2^40277869 is an apocalyptic number.

It is an amenable number.

40277869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40277869 is an equidigital number, since it uses as much as digits as its factorization.

40277869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 40277869 is about 6346.4847750546. The cubic root of 40277869 is about 342.7852781505.

The spelling of 40277869 in words is "forty million, two hundred seventy-seven thousand, eight hundred sixty-nine".