997384133 has 8 divisors (see below), whose sum is σ = 1019060352. Its totient is φ = 975726976.

The previous prime is 997384109. The next prime is 997384147. The reversal of 997384133 is 331483799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997384133 - 2¹² = 997380037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997384433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167066 + ... + 172932.

It is an arithmetic number, because the mean of its divisors is an integer number (127382544).

Almost surely, 2^997384133 is an apocalyptic number.

It is an amenable number.

997384133 is a deficient number, since it is larger than the sum of its proper divisors (21676219).

997384133 is a wasteful number, since it uses less digits than its factorization.

997384133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531.

The product of its digits is 489888, while the sum is 47.

The square root of 997384133 is about 31581.3890289835. The cubic root of 997384133 is about 999.1272829198.

The spelling of 997384133 in words is "nine hundred ninety-seven million, three hundred eighty-four thousand, one hundred thirty-three".