9945279 has 12 divisors (see below), whose sum is σ = 14580696. Its totient is φ = 6530832.

The previous prime is 9945277. The next prime is 9945307. The reversal of 9945279 is 9725499.

It is not a de Polignac number, because 9945279 - 2¹ = 9945277 is a prime.

It is a super-3 number, since 3×9945279³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945277) 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, 7644 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (1215058).

Almost surely, 2^9945279 is an apocalyptic number.

9945279 is a deficient number, since it is larger than the sum of its proper divisors (4635417).

9945279 is a wasteful number, since it uses less digits than its factorization.

9945279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566 (or 16563 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 9945279 is about 3153.6136415230. The cubic root of 9945279 is about 215.0497739457.

The spelling of 9945279 in words is "nine million, nine hundred forty-five thousand, two hundred seventy-nine".