1149861 has 8 divisors (see below), whose sum is σ = 1613920. Its totient is φ = 726192.

The previous prime is 1149859. The next prime is 1149881. The reversal of 1149861 is 1689411.

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

It is not a de Polignac number, because 1149861 - 2¹ = 1149859 is a prime.

It is a Duffinian number.

1149861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149881) 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, 10030 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (201740).

2^1149861 is an apocalyptic number.

It is an amenable number.

1149861 is a deficient number, since it is larger than the sum of its proper divisors (464059).

1149861 is a wasteful number, since it uses less digits than its factorization.

1149861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20195.

The product of its digits is 1728, while the sum is 30.

The square root of 1149861 is about 1072.3157184337. The cubic root of 1149861 is about 104.7647340211.

The spelling of 1149861 in words is "one million, one hundred forty-nine thousand, eight hundred sixty-one".