1057939 has 4 divisors (see below), whose sum is σ = 1113640. Its totient is φ = 1002240.

The previous prime is 1057919. The next prime is 1057951. The reversal of 1057939 is 9397501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1057939 - 2⁵ = 1057907 is a prime.

It is a super-2 number, since 2×1057939² = 2238469855442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27822 + ... + 27859.

It is an arithmetic number, because the mean of its divisors is an integer number (278410).

2^1057939 is an apocalyptic number.

1057939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1057939 is a deficient number, since it is larger than the sum of its proper divisors (55701).

1057939 is an equidigital number, since it uses as much as digits as its factorization.

1057939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55700.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1057939 is about 1028.5616170167. The cubic root of 1057939 is about 101.8951569133.

The spelling of 1057939 in words is "one million, fifty-seven thousand, nine hundred thirty-nine".