1457889 has 8 divisors (see below), whose sum is σ = 2046240. Its totient is φ = 920736.

The previous prime is 1457887. The next prime is 1457891. The reversal of 1457889 is 9887541.

It is an interprime number because it is at equal distance from previous prime (1457887) and next prime (1457891).

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

It is not a de Polignac number, because 1457889 - 2¹ = 1457887 is a prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1457889.

It is not an unprimeable number, because it can be changed into a prime (1457887) 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, 12732 + ... + 12845.

It is an arithmetic number, because the mean of its divisors is an integer number (255780).

2^1457889 is an apocalyptic number.

1457889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1457889 is a deficient number, since it is larger than the sum of its proper divisors (588351).

1457889 is a wasteful number, since it uses less digits than its factorization.

1457889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25599.

The product of its digits is 80640, while the sum is 42.

The square root of 1457889 is about 1207.4307433555. The cubic root of 1457889 is about 113.3900168201.

It can be divided in two parts, 1457 and 889, that added together give a triangular number (2346 = T₆₈).

The spelling of 1457889 in words is "one million, four hundred fifty-seven thousand, eight hundred eighty-nine".