133499394 has 32 divisors (see below), whose sum is σ = 339047040. Its totient is φ = 38142576.

The previous prime is 133499389. The next prime is 133499413. The reversal of 133499394 is 493994331.

It is a super-3 number, since 3×133499394³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176209 + ... + 176964.

It is an arithmetic number, because the mean of its divisors is an integer number (10595220).

Almost surely, 2^133499394 is an apocalyptic number.

133499394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

133499394 is an abundant number, since it is smaller than the sum of its proper divisors (205547646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133499394 is a wasteful number, since it uses less digits than its factorization.

133499394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353191 (or 353185 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 133499394 is about 11554.1937840768. The cubic root of 133499394 is about 511.0849566992.

The spelling of 133499394 in words is "one hundred thirty-three million, four hundred ninety-nine thousand, three hundred ninety-four".