333333397 has 4 divisors (see below), whose sum is σ = 350877280. Its totient is φ = 315789516.

The previous prime is 333333379. The next prime is 333333409. The reversal of 333333397 is 793333333.

It is a happy number.

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 not a de Polignac number, because 333333397 - 2⁷ = 333333269 is a prime.

It is a super-2 number, since 2×333333397² = 222222307111119218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333333307) 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, 8771913 + ... + 8771950.

It is an arithmetic number, because the mean of its divisors is an integer number (87719320).

Almost surely, 2^333333397 is an apocalyptic number.

It is an amenable number.

333333397 is a deficient number, since it is larger than the sum of its proper divisors (17543883).

333333397 is a wasteful number, since it uses less digits than its factorization.

333333397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17543882.

The product of its digits is 137781, while the sum is 37.

The square root of 333333397 is about 18257.4203270889. The cubic root of 333333397 is about 693.3613184946.

The spelling of 333333397 in words is "three hundred thirty-three million, three hundred thirty-three thousand, three hundred ninety-seven".