133979480 has 32 divisors (see below), whose sum is σ = 303318000. Its totient is φ = 53260416.

The previous prime is 133979477. The next prime is 133979491. The reversal of 133979480 is 84979331.

It is a happy number.

It is a super-2 number, since 2×133979480² = 35901002122140800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 16794.

Almost surely, 2^133979480 is an apocalyptic number.

133979480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133979480 is an abundant number, since it is smaller than the sum of its proper divisors (169338520).

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

133979480 is a wasteful number, since it uses less digits than its factorization.

133979480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20723 (or 20719 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 133979480 is about 11574.9505398511. The cubic root of 133979480 is about 511.6968725721.

The spelling of 133979480 in words is "one hundred thirty-three million, nine hundred seventy-nine thousand, four hundred eighty".