919328249 has 12 divisors (see below), whose sum is σ = 1072615284. Its totient is φ = 785643264.

The previous prime is 919328237. The next prime is 919328257. The reversal of 919328249 is 942823919.

It can be written as a sum of positive squares in 2 ways, for example, as 541725625 + 377602624 = 23275^2 + 19432^2 .

It is not a de Polignac number, because 919328249 - 2²⁸ = 650892793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (919328209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11324 + ... + 44349.

It is an arithmetic number, because the mean of its divisors is an integer number (89384607).

Almost surely, 2^919328249 is an apocalyptic number.

It is an amenable number.

919328249 is a deficient number, since it is larger than the sum of its proper divisors (153287035).

919328249 is a wasteful number, since it uses less digits than its factorization.

919328249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56024 (or 56017 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 919328249 is about 30320.4262667925. The cubic root of 919328249 is about 972.3520520900.

The spelling of 919328249 in words is "nine hundred nineteen million, three hundred twenty-eight thousand, two hundred forty-nine".