19939292 has 12 divisors (see below), whose sum is σ = 35041440. Its totient is φ = 9927456.

The previous prime is 19939277. The next prime is 19939307. The reversal of 19939292 is 29293991.

It is an interprime number because it is at equal distance from previous prime (19939277) and next prime (19939307).

It is a super-2 number, since 2×19939292² = 795150730922528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9473 + ... + 11384.

It is an arithmetic number, because the mean of its divisors is an integer number (2920120).

Almost surely, 2^19939292 is an apocalyptic number.

It is an amenable number.

19939292 is a deficient number, since it is larger than the sum of its proper divisors (15102148).

19939292 is a wasteful number, since it uses less digits than its factorization.

19939292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100 (or 21098 counting only the distinct ones).

The product of its digits is 78732, while the sum is 44.

The square root of 19939292 is about 4465.3434358401. The cubic root of 19939292 is about 271.1668385299.

The spelling of 19939292 in words is "nineteen million, nine hundred thirty-nine thousand, two hundred ninety-two".