133393397 has 8 divisors (see below), whose sum is σ = 135785952. Its totient is φ = 131007600.

The previous prime is 133393391. The next prime is 133393493. The reversal of 133393397 is 793393331.

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 133393397 - 2¹² = 133389301 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 (133393391) 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, 54122 + ... + 56532.

It is an arithmetic number, because the mean of its divisors is an integer number (16973244).

Almost surely, 2^133393397 is an apocalyptic number.

It is an amenable number.

133393397 is a deficient number, since it is larger than the sum of its proper divisors (2392555).

133393397 is an equidigital number, since it uses as much as digits as its factorization.

133393397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379.

The product of its digits is 137781, while the sum is 41.

The square root of 133393397 is about 11549.6059240132. The cubic root of 133393397 is about 510.9496556701.

The spelling of 133393397 in words is "one hundred thirty-three million, three hundred ninety-three thousand, three hundred ninety-seven".