19939116 has 24 divisors (see below), whose sum is σ = 46597824. Its totient is φ = 6635920.

The previous prime is 19939111. The next prime is 19939121. The reversal of 19939116 is 61193991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19939111) and next prime (19939121).

It is a super-2 number, since 2×19939116² = 795136693722912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19939111) 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, 12331 + ... + 13853.

It is an arithmetic number, because the mean of its divisors is an integer number (1941576).

Almost surely, 2^19939116 is an apocalyptic number.

It is an amenable number.

19939116 is an abundant number, since it is smaller than the sum of its proper divisors (26658708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19939116 is a wasteful number, since it uses less digits than its factorization.

19939116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2619 counting only the distinct ones).

The product of its digits is 13122, while the sum is 39.

The square root of 19939116 is about 4465.3237284658. The cubic root of 19939116 is about 271.1660406831.

It can be divided in two parts, 19 and 939116, that added together give a triangular number (939135 = T₁₃₇₀).

The spelling of 19939116 in words is "nineteen million, nine hundred thirty-nine thousand, one hundred sixteen".