19434993 has 8 divisors (see below), whose sum is σ = 26063808. Its totient is φ = 12881424.

The previous prime is 19434973. The next prime is 19434997. The reversal of 19434993 is 39943491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19434993 - 2¹⁰ = 19433969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19434997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18205 + ... + 19242.

It is an arithmetic number, because the mean of its divisors is an integer number (3257976).

Almost surely, 2^19434993 is an apocalyptic number.

It is an amenable number.

19434993 is a deficient number, since it is larger than the sum of its proper divisors (6628815).

19434993 is a wasteful number, since it uses less digits than its factorization.

19434993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37623.

The product of its digits is 104976, while the sum is 42.

The square root of 19434993 is about 4408.5136951131. The cubic root of 19434993 is about 268.8611980442.

The spelling of 19434993 in words is "nineteen million, four hundred thirty-four thousand, nine hundred ninety-three".