83490040 has 32 divisors (see below), whose sum is σ = 190662480. Its totient is φ = 32896512.

The previous prime is 83490031. The next prime is 83490059. The reversal of 83490040 is 4009438.

It is a junction number, because it is equal to n+sod(n) for n = 83489990 and 83490008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12897 + ... + 18256.

Almost surely, 2^83490040 is an apocalyptic number.

It is an amenable number.

83490040 is an abundant number, since it is smaller than the sum of its proper divisors (107172440).

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

83490040 is a wasteful number, since it uses less digits than its factorization.

83490040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31231 (or 31227 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 83490040 is about 9137.2884380433. The cubic root of 83490040 is about 437.0638526926.

Adding to 83490040 its reverse (4009438), we get a palindrome (87499478).

The spelling of 83490040 in words is "eighty-three million, four hundred ninety thousand, forty".