78411849 has 8 divisors (see below), whose sum is σ = 104590752. Its totient is φ = 52253760.

The previous prime is 78411811. The next prime is 78411859. The reversal of 78411849 is 94811487.

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

It is not a de Polignac number, because 78411849 - 2⁹ = 78411337 is a prime.

It is a super-2 number, since 2×78411849² = 12296836127197602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78411849.

It is not an unprimeable number, because it can be changed into a prime (78411859) 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, 9642 + ... + 15804.

It is an arithmetic number, because the mean of its divisors is an integer number (13073844).

Almost surely, 2^78411849 is an apocalyptic number.

It is an amenable number.

78411849 is a deficient number, since it is larger than the sum of its proper divisors (26178903).

78411849 is a wasteful number, since it uses less digits than its factorization.

78411849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407.

The product of its digits is 64512, while the sum is 42.

The square root of 78411849 is about 8855.0465272634. The cubic root of 78411849 is about 428.0165528434.

The spelling of 78411849 in words is "seventy-eight million, four hundred eleven thousand, eight hundred forty-nine".