83453985 has 24 divisors (see below), whose sum is σ = 152268480. Its totient is φ = 42165792.

The previous prime is 83453971. The next prime is 83453987. The reversal of 83453985 is 58935438.

It is a happy number.

83453985 is a `hidden beast` number, since 8 + 34 + 539 + 85 = 666.

It is not a de Polignac number, because 83453985 - 2⁶ = 83453921 is a prime.

It is a super-2 number, since 2×83453985² = 13929135224760450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 83453985.

It is not an unprimeable number, because it can be changed into a prime (83453987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47949 + ... + 49658.

It is an arithmetic number, because the mean of its divisors is an integer number (6344520).

Almost surely, 2^83453985 is an apocalyptic number.

It is an amenable number.

83453985 is a deficient number, since it is larger than the sum of its proper divisors (68814495).

83453985 is a wasteful number, since it uses less digits than its factorization.

83453985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97637 (or 97634 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 83453985 is about 9135.3152654958. The cubic root of 83453985 is about 437.0009285955. Note that the first 3 decimals are identical.

The spelling of 83453985 in words is "eighty-three million, four hundred fifty-three thousand, nine hundred eighty-five".