19740339 has 6 divisors (see below), whose sum is σ = 28513836. Its totient is φ = 13160220.

The previous prime is 19740337. The next prime is 19740341. The reversal of 19740339 is 93304791.

It is an interprime number because it is at equal distance from previous prime (19740337) and next prime (19740341).

It is not a de Polignac number, because 19740339 - 2¹ = 19740337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19740337) 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, 1096677 + ... + 1096694.

It is an arithmetic number, because the mean of its divisors is an integer number (4752306).

Almost surely, 2^19740339 is an apocalyptic number.

19740339 is a deficient number, since it is larger than the sum of its proper divisors (8773497).

19740339 is a wasteful number, since it uses less digits than its factorization.

19740339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193377 (or 2193374 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 19740339 is about 4443.0101282802. The cubic root of 19740339 is about 270.2619268926.

The spelling of 19740339 in words is "nineteen million, seven hundred forty thousand, three hundred thirty-nine".