76843149 has 4 divisors (see below), whose sum is σ = 102457536. Its totient is φ = 51228764.

The previous prime is 76843139. The next prime is 76843153. The reversal of 76843149 is 94134867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76843149 - 2⁴ = 76843133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76843149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76843139) 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, 12807189 + ... + 12807194.

It is an arithmetic number, because the mean of its divisors is an integer number (25614384).

Almost surely, 2^76843149 is an apocalyptic number.

It is an amenable number.

76843149 is a deficient number, since it is larger than the sum of its proper divisors (25614387).

76843149 is a wasteful number, since it uses less digits than its factorization.

76843149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25614386.

The product of its digits is 145152, while the sum is 42.

The square root of 76843149 is about 8766.0224161247. The cubic root of 76843149 is about 425.1430180725.

The spelling of 76843149 in words is "seventy-six million, eight hundred forty-three thousand, one hundred forty-nine".