85477940 has 24 divisors (see below), whose sum is σ = 179988480. Its totient is φ = 34098848.

The previous prime is 85477939. The next prime is 85477957. The reversal of 85477940 is 4977458.

It is a junction number, because it is equal to n+sod(n) for n = 85477891 and 85477900.

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, 2081 + ... + 13239.

It is an arithmetic number, because the mean of its divisors is an integer number (7499520).

Almost surely, 2^85477940 is an apocalyptic number.

It is an amenable number.

85477940 is an abundant number, since it is smaller than the sum of its proper divisors (94510540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85477940 is a wasteful number, since it uses less digits than its factorization.

85477940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551 (or 11549 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 85477940 is about 9245.4280593167. The cubic root of 85477940 is about 440.5055140361.

The spelling of 85477940 in words is "eighty-five million, four hundred seventy-seven thousand, nine hundred forty".