1141988 has 6 divisors (see below), whose sum is σ = 1998486. Its totient is φ = 570992.

The previous prime is 1141969. The next prime is 1141999. The reversal of 1141988 is 8891411.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 262144 = 938^2 + 512^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142745 + ... + 142752.

It is an arithmetic number, because the mean of its divisors is an integer number (333081).

2^1141988 is an apocalyptic number.

It is an amenable number.

1141988 is a deficient number, since it is larger than the sum of its proper divisors (856498).

1141988 is a wasteful number, since it uses less digits than its factorization.

1141988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285501 (or 285499 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 1141988 is about 1068.6383859847. The cubic root of 1141988 is about 104.5250811649.

The spelling of 1141988 in words is "one million, one hundred forty-one thousand, nine hundred eighty-eight".