78985933 has 8 divisors (see below), whose sum is σ = 88760448. Its totient is φ = 69739824.

The previous prime is 78985919. The next prime is 78985957. The reversal of 78985933 is 33958987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78985933 - 2²¹ = 76888781 is a prime.

It is a super-2 number, since 2×78985933² = 12477555223760978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78985903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131785 + ... + 132382.

It is an arithmetic number, because the mean of its divisors is an integer number (11095056).

Almost surely, 2^78985933 is an apocalyptic number.

It is an amenable number.

78985933 is a deficient number, since it is larger than the sum of its proper divisors (9774515).

78985933 is a wasteful number, since it uses less digits than its factorization.

78985933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264203.

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

The square root of 78985933 is about 8887.4030515106. The cubic root of 78985933 is about 429.0585731519.

It can be divided in two parts, 7898 and 5933, that added together give a palindrome (13831).

The spelling of 78985933 in words is "seventy-eight million, nine hundred eighty-five thousand, nine hundred thirty-three".