83990403 has 12 divisors (see below), whose sum is σ = 138650928. Its totient is φ = 47994480.

The previous prime is 83990381. The next prime is 83990419. The reversal of 83990403 is 30409938.

It is not a de Polignac number, because 83990403 - 2⁶ = 83990339 is a prime.

It is a super-2 number, since 2×83990403² = 14108775592204818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83990483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 666528 + ... + 666653.

It is an arithmetic number, because the mean of its divisors is an integer number (11554244).

Almost surely, 2^83990403 is an apocalyptic number.

83990403 is a deficient number, since it is larger than the sum of its proper divisors (54660525).

83990403 is a wasteful number, since it uses less digits than its factorization.

83990403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333194 (or 1333191 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 83990403 is about 9164.6278156835. The cubic root of 83990403 is about 437.9352346848.

The spelling of 83990403 in words is "eighty-three million, nine hundred ninety thousand, four hundred three".