85387924 has 6 divisors (see below), whose sum is σ = 149428874. Its totient is φ = 42693960.

The previous prime is 85387921. The next prime is 85387931. The reversal of 85387924 is 42978358.

It can be written as a sum of positive squares in only one way, i.e., 83137924 + 2250000 = 9118^2 + 1500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85387921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10673487 + ... + 10673494.

Almost surely, 2^85387924 is an apocalyptic number.

It is an amenable number.

85387924 is a deficient number, since it is larger than the sum of its proper divisors (64040950).

85387924 is a wasteful number, since it uses less digits than its factorization.

85387924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346985 (or 21346983 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 85387924 is about 9240.5586411212. The cubic root of 85387924 is about 440.3508290115.

The spelling of 85387924 in words is "eighty-five million, three hundred eighty-seven thousand, nine hundred twenty-four".