77048999 has 4 divisors (see below), whose sum is σ = 77084280. Its totient is φ = 77013720.

The previous prime is 77048899. The next prime is 77049001. The reversal of 77048999 is 99984077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99984077 = 1291 ⋅77447.

It is a cyclic number.

It is not a de Polignac number, because 77048999 - 2²⁰ = 76000423 is a prime.

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 77048999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77048399) 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, 14132 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (19271070).

Almost surely, 2^77048999 is an apocalyptic number.

77048999 is a deficient number, since it is larger than the sum of its proper divisors (35281).

77048999 is a wasteful number, since it uses less digits than its factorization.

77048999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35280.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 77048999 is about 8777.7559205072. The cubic root of 77048999 is about 425.5223087047.

The spelling of 77048999 in words is "seventy-seven million, forty-eight thousand, nine hundred ninety-nine".