33948987 has 4 divisors (see below), whose sum is σ = 45265320. Its totient is φ = 22632656.

The previous prime is 33948931. The next prime is 33948997. The reversal of 33948987 is 78984933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78984933 = 3 ⋅26328311.

It is a cyclic number.

It is not a de Polignac number, because 33948987 - 2⁶ = 33948923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33948917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5658162 + ... + 5658167.

It is an arithmetic number, because the mean of its divisors is an integer number (11316330).

Almost surely, 2^33948987 is an apocalyptic number.

33948987 is a deficient number, since it is larger than the sum of its proper divisors (11316333).

33948987 is a wasteful number, since it uses less digits than its factorization.

33948987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316332.

The product of its digits is 1306368, while the sum is 51.

The square root of 33948987 is about 5826.5759241599. The cubic root of 33948987 is about 323.7990771493.

The spelling of 33948987 in words is "thirty-three million, nine hundred forty-eight thousand, nine hundred eighty-seven".