33861973 has 2 divisors, whose sum is σ = 33861974. Its totient is φ = 33861972.

The previous prime is 33861907. The next prime is 33861979. The reversal of 33861973 is 37916833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20268004 + 13593969 = 4502^2 + 3687^2 .

It is a cyclic number.

It is not a de Polignac number, because 33861973 - 2⁹ = 33861461 is a prime.

It is a super-2 number, since 2×33861973² = 2293266430905458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33861979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16930986 + 16930987.

It is an arithmetic number, because the mean of its divisors is an integer number (16930987).

Almost surely, 2^33861973 is an apocalyptic number.

It is an amenable number.

33861973 is a deficient number, since it is larger than the sum of its proper divisors (1).

33861973 is an equidigital number, since it uses as much as digits as its factorization.

33861973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 33861973 is about 5819.1041406732. The cubic root of 33861973 is about 323.5221993848.

The spelling of 33861973 in words is "thirty-three million, eight hundred sixty-one thousand, nine hundred seventy-three".