33990977 has 2 divisors, whose sum is σ = 33990978. Its totient is φ = 33990976.

The previous prime is 33990961. The next prime is 33990989. The reversal of 33990977 is 77909933.

33990977 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21381376 + 12609601 = 4624^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 33990977 - 2⁴ = 33990961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33990997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16995488 + 16995489.

It is an arithmetic number, because the mean of its divisors is an integer number (16995489).

Almost surely, 2^33990977 is an apocalyptic number.

It is an amenable number.

33990977 is a deficient number, since it is larger than the sum of its proper divisors (1).

33990977 is an equidigital number, since it uses as much as digits as its factorization.

33990977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 321489, while the sum is 47.

The square root of 33990977 is about 5830.1781276390. The cubic root of 33990977 is about 323.9325197322.

The spelling of 33990977 in words is "thirty-three million, nine hundred ninety thousand, nine hundred seventy-seven".