83691398 has 8 divisors (see below), whose sum is σ = 143470992. Its totient is φ = 35867736.

The previous prime is 83691397. The next prime is 83691401. The reversal of 83691398 is 89319638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83691397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988965 + ... + 2988992.

It is an arithmetic number, because the mean of its divisors is an integer number (17933874).

Almost surely, 2^83691398 is an apocalyptic number.

83691398 is a deficient number, since it is larger than the sum of its proper divisors (59779594).

83691398 is a wasteful number, since it uses less digits than its factorization.

83691398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977966.

The product of its digits is 279936, while the sum is 47.

The square root of 83691398 is about 9148.3002792869. The cubic root of 83691398 is about 437.4149350806.

The spelling of 83691398 in words is "eighty-three million, six hundred ninety-one thousand, three hundred ninety-eight".