1939940 has 12 divisors (see below), whose sum is σ = 4073916. Its totient is φ = 775968.

The previous prime is 1939939. The next prime is 1939961. The reversal of 1939940 is 499391.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 1577536 = 602^2 + 1256^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1939940.

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, 48479 + ... + 48518.

It is an arithmetic number, because the mean of its divisors is an integer number (339493).

2^1939940 is an apocalyptic number.

1939940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1939940 is an abundant number, since it is smaller than the sum of its proper divisors (2133976).

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

1939940 is a wasteful number, since it uses less digits than its factorization.

1939940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97006 (or 97004 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 1939940 is about 1392.8172888071. The cubic root of 1939940 is about 124.7180846680.

The spelling of 1939940 in words is "one million, nine hundred thirty-nine thousand, nine hundred forty".