78948919 has 8 divisors (see below), whose sum is σ = 91026720. Its totient is φ = 67070976.

The previous prime is 78948907. The next prime is 78948923. The reversal of 78948919 is 91984987.

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

It is not a de Polignac number, because 78948919 - 2⁷ = 78948791 is a prime.

It is a super-2 number, since 2×78948919² = 12465863622537122, which contains 22 as substring.

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 78948919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78948619) 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, 49114 + ... + 50695.

It is an arithmetic number, because the mean of its divisors is an integer number (11378340).

Almost surely, 2^78948919 is an apocalyptic number.

78948919 is a deficient number, since it is larger than the sum of its proper divisors (12077801).

78948919 is a wasteful number, since it uses less digits than its factorization.

78948919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99929.

The product of its digits is 1306368, while the sum is 55.

The square root of 78948919 is about 8885.3204219094. The cubic root of 78948919 is about 428.9915415730.

The spelling of 78948919 in words is "seventy-eight million, nine hundred forty-eight thousand, nine hundred nineteen".