83939951 has 2 divisors, whose sum is σ = 83939952. Its totient is φ = 83939950.

The previous prime is 83939941. The next prime is 83939957. The reversal of 83939951 is 15993938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83939951 - 2¹⁰ = 83938927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83939896 and 83939905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83939957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41969975 + 41969976.

It is an arithmetic number, because the mean of its divisors is an integer number (41969976).

Almost surely, 2^83939951 is an apocalyptic number.

83939951 is a deficient number, since it is larger than the sum of its proper divisors (1).

83939951 is an equidigital number, since it uses as much as digits as its factorization.

83939951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 83939951 is about 9161.8748627123. The cubic root of 83939951 is about 437.8475296886.

The spelling of 83939951 in words is "eighty-three million, nine hundred thirty-nine thousand, nine hundred fifty-one".