1457939 has 4 divisors (see below), whose sum is σ = 1666224. Its totient is φ = 1249656.

The previous prime is 1457933. The next prime is 1457941. The reversal of 1457939 is 9397541.

It is a happy number.

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 1457939 - 2⁸ = 1457683 is a prime.

It is a super-2 number, since 2×1457939² = 4251172255442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1457933) 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, 104132 + ... + 104145.

It is an arithmetic number, because the mean of its divisors is an integer number (416556).

2^1457939 is an apocalyptic number.

1457939 is a deficient number, since it is larger than the sum of its proper divisors (208285).

1457939 is an equidigital number, since it uses as much as digits as its factorization.

1457939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208284.

The product of its digits is 34020, while the sum is 38.

The square root of 1457939 is about 1207.4514482993. The cubic root of 1457939 is about 113.3913130861.

The spelling of 1457939 in words is "one million, four hundred fifty-seven thousand, nine hundred thirty-nine".