911409428 has 12 divisors (see below), whose sum is σ = 1598757972. Its totient is φ = 454621440.

The previous prime is 911409427. The next prime is 911409437. The reversal of 911409428 is 824904119.

It can be written as a sum of positive squares in 2 ways, for example, as 280495504 + 630913924 = 16748^2 + 25118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 911409391 and 911409400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (911409427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268925 + ... + 272292.

It is an arithmetic number, because the mean of its divisors is an integer number (133229831).

Almost surely, 2^911409428 is an apocalyptic number.

It is an amenable number.

911409428 is a deficient number, since it is larger than the sum of its proper divisors (687348544).

911409428 is a wasteful number, since it uses less digits than its factorization.

911409428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541642 (or 541640 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 911409428 is about 30189.5582610942. The cubic root of 911409428 is about 969.5521466764.

The spelling of 911409428 in words is "nine hundred eleven million, four hundred nine thousand, four hundred twenty-eight".