1929940 has 12 divisors (see below), whose sum is σ = 4052916. Its totient is φ = 771968.

The previous prime is 1929929. The next prime is 1929943. The reversal of 1929940 is 499291.

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 1602756 = 572^2 + 1266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1929896 and 1929905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1929943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48229 + ... + 48268.

It is an arithmetic number, because the mean of its divisors is an integer number (337743).

2^1929940 is an apocalyptic number.

1929940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1929940 is an abundant number, since it is smaller than the sum of its proper divisors (2122976).

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

1929940 is a wasteful number, since it uses less digits than its factorization.

1929940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96506 (or 96504 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1929940 is about 1389.2228043046. Note that the first 3 decimals coincide. The cubic root of 1929940 is about 124.5034165178.

The spelling of 1929940 in words is "one million, nine hundred twenty-nine thousand, nine hundred forty".