33399923 has 2 divisors, whose sum is σ = 33399924. Its totient is φ = 33399922.

The previous prime is 33399907. The next prime is 33399983. The reversal of 33399923 is 32999333.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33399923 - 2⁴ = 33399907 is a prime.

It is a super-2 number, since 2×33399923² = 2231109712811858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33399983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16699961 + 16699962.

It is an arithmetic number, because the mean of its divisors is an integer number (16699962).

Almost surely, 2^33399923 is an apocalyptic number.

33399923 is a deficient number, since it is larger than the sum of its proper divisors (1).

33399923 is an equidigital number, since it uses as much as digits as its factorization.

33399923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118098, while the sum is 41.

The square root of 33399923 is about 5779.2666489789. The cubic root of 33399923 is about 322.0439577091.

The spelling of 33399923 in words is "thirty-three million, three hundred ninety-nine thousand, nine hundred twenty-three".