938447969 has 4 divisors (see below), whose sum is σ = 940164144. Its totient is φ = 936731796.

The previous prime is 938447959. The next prime is 938447977. The reversal of 938447969 is 969744839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938447969 is a prime.

It is a super-2 number, since 2×938447969² = 1761369181040449922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938447959) 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, 857267 + ... + 858360.

It is an arithmetic number, because the mean of its divisors is an integer number (235041036).

Almost surely, 2^938447969 is an apocalyptic number.

It is an amenable number.

938447969 is a deficient number, since it is larger than the sum of its proper divisors (1716175).

938447969 is a wasteful number, since it uses less digits than its factorization.

938447969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716174.

The product of its digits is 11757312, while the sum is 59.

The square root of 938447969 is about 30634.0981424295. The cubic root of 938447969 is about 979.0466812250.

The spelling of 938447969 in words is "nine hundred thirty-eight million, four hundred forty-seven thousand, nine hundred sixty-nine".