83897953 has 4 divisors (see below), whose sum is σ = 84015360. Its totient is φ = 83780548.

The previous prime is 83897923. The next prime is 83897963. The reversal of 83897953 is 35979838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83897953 - 2⁹ = 83897441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83897953.

It is not an unprimeable number, because it can be changed into a prime (83897903) 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, 57625 + ... + 59062.

It is an arithmetic number, because the mean of its divisors is an integer number (21003840).

Almost surely, 2^83897953 is an apocalyptic number.

It is an amenable number.

83897953 is a deficient number, since it is larger than the sum of its proper divisors (117407).

83897953 is a wasteful number, since it uses less digits than its factorization.

83897953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117406.

The product of its digits is 1632960, while the sum is 52.

The square root of 83897953 is about 9159.5825778253. The cubic root of 83897953 is about 437.7744941911.

The spelling of 83897953 in words is "eighty-three million, eight hundred ninety-seven thousand, nine hundred fifty-three".