33970009 has 2 divisors, whose sum is σ = 33970010. Its totient is φ = 33970008.

The previous prime is 33969989. The next prime is 33970051. The reversal of 33970009 is 90007933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24970009 + 9000000 = 4997^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 33970009 - 2⁵ = 33969977 is a prime.

It is a super-2 number, since 2×33970009² = 2307923022920162, which contains 22 as substring.

It is equal to p_2087644 and since 33970009 and 2087644 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (33974009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16985004 + 16985005.

It is an arithmetic number, because the mean of its divisors is an integer number (16985005).

Almost surely, 2^33970009 is an apocalyptic number.

It is an amenable number.

33970009 is a deficient number, since it is larger than the sum of its proper divisors (1).

33970009 is an equidigital number, since it uses as much as digits as its factorization.

33970009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 33970009 is about 5828.3796204434. The cubic root of 33970009 is about 323.8658979913.

The spelling of 33970009 in words is "thirty-three million, nine hundred seventy thousand, nine".