85969478 has 16 divisors (see below), whose sum is σ = 147619584. Its totient is φ = 36783240.

The previous prime is 85969453. The next prime is 85969489. The reversal of 85969478 is 87496958.

It is a super-2 number, since 2×85969478² = 14781502295184968, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4313 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (9226224).

Almost surely, 2^85969478 is an apocalyptic number.

85969478 is a deficient number, since it is larger than the sum of its proper divisors (61650106).

85969478 is a wasteful number, since it uses less digits than its factorization.

85969478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147.

The product of its digits is 4354560, while the sum is 56.

The square root of 85969478 is about 9271.9727135060. The cubic root of 85969478 is about 441.3482713602.

The spelling of 85969478 in words is "eighty-five million, nine hundred sixty-nine thousand, four hundred seventy-eight".