83849870 has 16 divisors (see below), whose sum is σ = 162540000. Its totient is φ = 30959904.

The previous prime is 83849867. The next prime is 83849873. The reversal of 83849870 is 7894838.

It is an interprime number because it is at equal distance from previous prime (83849867) and next prime (83849873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83849873) by changing a digit.

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, 322370 + ... + 322629.

It is an arithmetic number, because the mean of its divisors is an integer number (10158750).

Almost surely, 2^83849870 is an apocalyptic number.

83849870 is a deficient number, since it is larger than the sum of its proper divisors (78690130).

83849870 is a wasteful number, since it uses less digits than its factorization.

83849870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645019.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 83849870 is about 9156.9574641362. The cubic root of 83849870 is about 437.6908468045.

The spelling of 83849870 in words is "eighty-three million, eight hundred forty-nine thousand, eight hundred seventy".