775028149 has 12 divisors (see below), whose sum is σ = 906294528. Its totient is φ = 660823800.

The previous prime is 775028143. The next prime is 775028197. The reversal of 775028149 is 941820577.

It is not a de Polignac number, because 775028149 - 2¹⁹ = 774503861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775028143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32047 + ... + 50764.

It is an arithmetic number, because the mean of its divisors is an integer number (75524544).

Almost surely, 2^775028149 is an apocalyptic number.

It is an amenable number.

775028149 is a deficient number, since it is larger than the sum of its proper divisors (131266379).

775028149 is a wasteful number, since it uses less digits than its factorization.

775028149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83016 (or 83009 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 775028149 is about 27839.3273805241. The cubic root of 775028149 is about 918.5563957890.

The spelling of 775028149 in words is "seven hundred seventy-five million, twenty-eight thousand, one hundred forty-nine".