1139858 has 8 divisors (see below), whose sum is σ = 1719228. Its totient is φ = 566784.

The previous prime is 1139851. The next prime is 1139861. The reversal of 1139858 is 8589311.

It can be written as a sum of positive squares in 2 ways, for example, as 1138489 + 1369 = 1067^2 + 37^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1139851) 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, 1091 + ... + 1862.

2^1139858 is an apocalyptic number.

1139858 is a deficient number, since it is larger than the sum of its proper divisors (579370).

1139858 is a wasteful number, since it uses less digits than its factorization.

1139858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148.

The product of its digits is 8640, while the sum is 35.

The square root of 1139858 is about 1067.6413255396. The cubic root of 1139858 is about 104.4600550917.

The spelling of 1139858 in words is "one million, one hundred thirty-nine thousand, eight hundred fifty-eight".