133934978 has 4 divisors (see below), whose sum is σ = 200902470. Its totient is φ = 66967488.

The previous prime is 133934953. The next prime is 133935019. The reversal of 133934978 is 879439331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879439331 = 463 ⋅1899437.

It can be written as a sum of positive squares in only one way, i.e., 100260169 + 33674809 = 10013^2 + 5803^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33483743 + ... + 33483746.

Almost surely, 2^133934978 is an apocalyptic number.

133934978 is a deficient number, since it is larger than the sum of its proper divisors (66967492).

133934978 is an equidigital number, since it uses as much as digits as its factorization.

133934978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66967491.

The product of its digits is 489888, while the sum is 47.

The square root of 133934978 is about 11573.0280393681. The cubic root of 133934978 is about 511.6402120150.

The spelling of 133934978 in words is "one hundred thirty-three million, nine hundred thirty-four thousand, nine hundred seventy-eight".