33897949 has 4 divisors (see below), whose sum is σ = 35891964. Its totient is φ = 31903936.

The previous prime is 33897943. The next prime is 33897967. The reversal of 33897949 is 94979833.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30173049 + 3724900 = 5493^2 + 1930^2 .

It is a cyclic number.

It is not a de Polignac number, because 33897949 - 2⁷ = 33897821 is a prime.

It is a super-2 number, since 2×33897949² = 2298141892813202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33897896 and 33897905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33897943) 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, 996982 + ... + 997015.

It is an arithmetic number, because the mean of its divisors is an integer number (8972991).

Almost surely, 2^33897949 is an apocalyptic number.

It is an amenable number.

33897949 is a deficient number, since it is larger than the sum of its proper divisors (1994015).

33897949 is a wasteful number, since it uses less digits than its factorization.

33897949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994014.

The product of its digits is 1469664, while the sum is 52.

The square root of 33897949 is about 5822.1945175337. The cubic root of 33897949 is about 323.6367321400.

The spelling of 33897949 in words is "thirty-three million, eight hundred ninety-seven thousand, nine hundred forty-nine".