78955959 has 4 divisors (see below), whose sum is σ = 105274616. Its totient is φ = 52637304.

The previous prime is 78955957. The next prime is 78955969. The reversal of 78955959 is 95955987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95955987 = 3 ⋅31985329.

It is not a de Polignac number, because 78955959 - 2¹ = 78955957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78955899 and 78955908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78955957) 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, 13159324 + ... + 13159329.

It is an arithmetic number, because the mean of its divisors is an integer number (26318654).

Almost surely, 2^78955959 is an apocalyptic number.

78955959 is a deficient number, since it is larger than the sum of its proper divisors (26318657).

78955959 is a wasteful number, since it uses less digits than its factorization.

78955959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26318656.

The product of its digits is 5103000, while the sum is 57.

The square root of 78955959 is about 8885.7165721173. The cubic root of 78955959 is about 429.0042924788.

The spelling of 78955959 in words is "seventy-eight million, nine hundred fifty-five thousand, nine hundred fifty-nine".