997113853 has 16 divisors (see below), whose sum is σ = 1041187840. Its totient is φ = 953856000.

The previous prime is 997113841. The next prime is 997113911. The reversal of 997113853 is 358311799.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 997113853 - 2¹³ = 997105661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997113553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296253 + ... + 1297021.

It is an arithmetic number, because the mean of its divisors is an integer number (65074240).

Almost surely, 2^997113853 is an apocalyptic number.

It is an amenable number.

997113853 is a deficient number, since it is larger than the sum of its proper divisors (44073987).

997113853 is a wasteful number, since it uses less digits than its factorization.

997113853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228.

The product of its digits is 204120, while the sum is 46.

The square root of 997113853 is about 31577.1096365706. The cubic root of 997113853 is about 999.0370239748.

The spelling of 997113853 in words is "nine hundred ninety-seven million, one hundred thirteen thousand, eight hundred fifty-three".