39121893 has 16 divisors (see below), whose sum is σ = 61009600. Its totient is φ = 24708240.

The previous prime is 39121891. The next prime is 39121909. The reversal of 39121893 is 39812193.

It is not a de Polignac number, because 39121893 - 2¹ = 39121891 is a prime.

It is a super-3 number, since 3×39121893³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39121891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37618 + ... + 38643.

It is an arithmetic number, because the mean of its divisors is an integer number (3813100).

Almost surely, 2^39121893 is an apocalyptic number.

It is an amenable number.

39121893 is a deficient number, since it is larger than the sum of its proper divisors (21887707).

39121893 is a wasteful number, since it uses less digits than its factorization.

39121893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76289 (or 76283 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 39121893 is about 6254.7496352772. The cubic root of 39121893 is about 339.4740802250.

The spelling of 39121893 in words is "thirty-nine million, one hundred twenty-one thousand, eight hundred ninety-three".