33873993 has 6 divisors (see below), whose sum is σ = 48929114. Its totient is φ = 22582656.

The previous prime is 33873991. The next prime is 33873997. The reversal of 33873993 is 39937833.

It can be written as a sum of positive squares in only one way, i.e., 33315984 + 558009 = 5772^2 + 747^2 .

It is not a de Polignac number, because 33873993 - 2¹ = 33873991 is a prime.

It is a super-2 number, since 2×33873993² = 2294894803528098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33873991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1881880 + ... + 1881897.

Almost surely, 2^33873993 is an apocalyptic number.

It is an amenable number.

33873993 is a deficient number, since it is larger than the sum of its proper divisors (15055121).

33873993 is a wasteful number, since it uses less digits than its factorization.

33873993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763783 (or 3763780 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 33873993 is about 5820.1368540611. The cubic root of 33873993 is about 323.5604751305.

The spelling of 33873993 in words is "thirty-three million, eight hundred seventy-three thousand, nine hundred ninety-three".