84623940 has 60 divisors (see below), whose sum is σ = 265473516. Its totient is φ = 22565952.

The previous prime is 84623939. The next prime is 84623953. The reversal of 84623940 is 4932648.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31741956 + 52881984 = 5634^2 + 7272^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×84623940² = 14322422442247200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 84623895 and 84623904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24499 + ... + 27738.

Almost surely, 2^84623940 is an apocalyptic number.

It is an amenable number.

84623940 is an abundant number, since it is smaller than the sum of its proper divisors (180849576).

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

84623940 is a wasteful number, since it uses less digits than its factorization.

84623940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52258 (or 52247 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 84623940 is about 9199.1271325056. The cubic root of 84623940 is about 439.0335883032.

The spelling of 84623940 in words is "eighty-four million, six hundred twenty-three thousand, nine hundred forty".