83936391 has 16 divisors (see below), whose sum is σ = 139531008. Its totient is φ = 43603200.

The previous prime is 83936351. The next prime is 83936393. The reversal of 83936391 is 19363938.

It is not a de Polignac number, because 83936391 - 2¹⁵ = 83903623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83936393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181450 + ... + 181911.

It is an arithmetic number, because the mean of its divisors is an integer number (8720688).

Almost surely, 2^83936391 is an apocalyptic number.

83936391 is a deficient number, since it is larger than the sum of its proper divisors (55594617).

83936391 is a wasteful number, since it uses less digits than its factorization.

83936391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363382.

The product of its digits is 104976, while the sum is 42.

The square root of 83936391 is about 9161.6805772740. The cubic root of 83936391 is about 437.8413397110.

The spelling of 83936391 in words is "eighty-three million, nine hundred thirty-six thousand, three hundred ninety-one".