85440727 has 2 divisors, whose sum is σ = 85440728. Its totient is φ = 85440726.

The previous prime is 85440703. The next prime is 85440731. The reversal of 85440727 is 72704458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85440727 - 2⁷ = 85440599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85440737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42720363 + 42720364.

It is an arithmetic number, because the mean of its divisors is an integer number (42720364).

Almost surely, 2^85440727 is an apocalyptic number.

85440727 is a deficient number, since it is larger than the sum of its proper divisors (1).

85440727 is an equidigital number, since it uses as much as digits as its factorization.

85440727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 85440727 is about 9243.4153320080. The cubic root of 85440727 is about 440.4415797582.

The spelling of 85440727 in words is "eighty-five million, four hundred forty thousand, seven hundred twenty-seven".