1939971 has 8 divisors (see below), whose sum is σ = 2821824. Its totient is φ = 1175720.

The previous prime is 1939969. The next prime is 1939999. The reversal of 1939971 is 1799391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1939971 - 2¹ = 1939969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1939901) 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, 29361 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (352728).

2^1939971 is an apocalyptic number.

1939971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1939971 is a deficient number, since it is larger than the sum of its proper divisors (881853).

1939971 is a wasteful number, since it uses less digits than its factorization.

1939971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58801.

The product of its digits is 15309, while the sum is 39.

The square root of 1939971 is about 1392.8284172862. The cubic root of 1939971 is about 124.7187489909.

The spelling of 1939971 in words is "one million, nine hundred thirty-nine thousand, nine hundred seventy-one".