83953957 has 2 divisors, whose sum is σ = 83953958. Its totient is φ = 83953956.

The previous prime is 83953889. The next prime is 83953993. The reversal of 83953957 is 75935938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 30459361 = 7314^2 + 5519^2 .

It is a cyclic number.

It is not a de Polignac number, because 83953957 - 2⁷ = 83953829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83953957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83953357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41976978 + 41976979.

It is an arithmetic number, because the mean of its divisors is an integer number (41976979).

Almost surely, 2^83953957 is an apocalyptic number.

It is an amenable number.

83953957 is a deficient number, since it is larger than the sum of its proper divisors (1).

83953957 is an equidigital number, since it uses as much as digits as its factorization.

83953957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 49.

The square root of 83953957 is about 9162.6391940314. The cubic root of 83953957 is about 437.8718810309.

The spelling of 83953957 in words is "eighty-three million, nine hundred fifty-three thousand, nine hundred fifty-seven".