938576909 has 6 divisors (see below), whose sum is σ = 971112330. Its totient is φ = 906052896.

The previous prime is 938576869. The next prime is 938576911. The reversal of 938576909 is 909675839.

It can be written as a sum of positive squares in 3 ways, for example, as 645414025 + 293162884 = 25405^2 + 17122^2 .

It is not a de Polignac number, because 938576909 - 2¹⁶ = 938511373 is a prime.

It is a super-2 number, since 2×938576909² = 1761853228215988562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938576809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162137 + ... + 167825.

It is an arithmetic number, because the mean of its divisors is an integer number (161852055).

Almost surely, 2^938576909 is an apocalyptic number.

It is an amenable number.

938576909 is a deficient number, since it is larger than the sum of its proper divisors (32535421).

938576909 is an frugal number, since it uses more digits than its factorization.

938576909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11407 (or 5718 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 938576909 is about 30636.2025877882. The cubic root of 938576909 is about 979.0915185529.

The spelling of 938576909 in words is "nine hundred thirty-eight million, five hundred seventy-six thousand, nine hundred nine".