83947653 has 12 divisors (see below), whose sum is σ = 124078240. Its totient is φ = 54663336.

The previous prime is 83947621. The next prime is 83947657. The reversal of 83947653 is 35674938.

It is not a de Polignac number, because 83947653 - 2⁵ = 83947621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83947599 and 83947608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83947657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108073 + ... + 108846.

Almost surely, 2^83947653 is an apocalyptic number.

It is an amenable number.

83947653 is a deficient number, since it is larger than the sum of its proper divisors (40130587).

83947653 is a wasteful number, since it uses less digits than its factorization.

83947653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216968 (or 216965 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 83947653 is about 9162.2951818854. The cubic root of 83947653 is about 437.8609210018.

The spelling of 83947653 in words is "eighty-three million, nine hundred forty-seven thousand, six hundred fifty-three".