40064867 has 2 divisors, whose sum is σ = 40064868. Its totient is φ = 40064866.

The previous prime is 40064839. The next prime is 40064887. The reversal of 40064867 is 76846004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40064867 - 2⁸ = 40064611 is a prime.

It is not a weakly prime, because it can be changed into another prime (40064887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20032433 + 20032434.

It is an arithmetic number, because the mean of its divisors is an integer number (20032434).

Almost surely, 2^40064867 is an apocalyptic number.

40064867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40064867 is an equidigital number, since it uses as much as digits as its factorization.

40064867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 40064867 is about 6329.6814295824. The cubic root of 40064867 is about 342.1799578427.

The spelling of 40064867 in words is "forty million, sixty-four thousand, eight hundred sixty-seven".