997453393 has 8 divisors (see below), whose sum is σ = 1111713120. Its totient is φ = 889369920.

The previous prime is 997453381. The next prime is 997453399. The reversal of 997453393 is 393354799.

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 997453393 - 2⁵ = 997453361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997453393.

It is not an unprimeable number, because it can be changed into a prime (997453399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543723 + ... + 1544368.

It is an arithmetic number, because the mean of its divisors is an integer number (138964140).

Almost surely, 2^997453393 is an apocalyptic number.

It is an amenable number.

997453393 is a deficient number, since it is larger than the sum of its proper divisors (114259727).

997453393 is a wasteful number, since it uses less digits than its factorization.

997453393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088127.

The product of its digits is 2755620, while the sum is 52.

The square root of 997453393 is about 31582.4855418316. The cubic root of 997453393 is about 999.1504094002.

The spelling of 997453393 in words is "nine hundred ninety-seven million, four hundred fifty-three thousand, three hundred ninety-three".