133409390 has 16 divisors (see below), whose sum is σ = 240438240. Its totient is φ = 53296800.

The previous prime is 133409389. The next prime is 133409417. The reversal of 133409390 is 93904331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (15027390).

Almost surely, 2^133409390 is an apocalyptic number.

133409390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133409390 is a deficient number, since it is larger than the sum of its proper divisors (107028850).

133409390 is a wasteful number, since it uses less digits than its factorization.

133409390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16747.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 133409390 is about 11550.2982645471. The cubic root of 133409390 is about 510.9700747000.

The spelling of 133409390 in words is "one hundred thirty-three million, four hundred nine thousand, three hundred ninety".