133992747 has 24 divisors (see below), whose sum is σ = 222949376. Its totient is φ = 75959856.

The previous prime is 133992743. The next prime is 133992767. The reversal of 133992747 is 747299331.

It is not a de Polignac number, because 133992747 - 2² = 133992743 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133992743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373 + ... + 16374.

Almost surely, 2^133992747 is an apocalyptic number.

133992747 is a deficient number, since it is larger than the sum of its proper divisors (88956629).

133992747 is a wasteful number, since it uses less digits than its factorization.

133992747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16887 (or 16884 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 133992747 is about 11575.5236166663. The cubic root of 133992747 is about 511.7137618707.

The spelling of 133992747 in words is "one hundred thirty-three million, nine hundred ninety-two thousand, seven hundred forty-seven".