19939122 has 48 divisors (see below), whose sum is σ = 51210432. Its totient is φ = 5695920.

The previous prime is 19939121. The next prime is 19939123. The reversal of 19939122 is 22193991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19939121) and next prime (19939123).

It is a super-2 number, since 2×19939122² = 795137172261768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19939121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 472 + ... + 6332.

It is an arithmetic number, because the mean of its divisors is an integer number (1066884).

Almost surely, 2^19939122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19939122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25605216).

19939122 is an abundant number, since it is smaller than the sum of its proper divisors (31271310).

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

19939122 is an equidigital number, since it uses as much as digits as its factorization.

19939122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885 (or 5873 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 19939122 is about 4465.3244003096. The cubic root of 19939122 is about 271.1660678825.

The spelling of 19939122 in words is "nineteen million, nine hundred thirty-nine thousand, one hundred twenty-two".