1138916 has 6 divisors (see below), whose sum is σ = 1993110. Its totient is φ = 569456.

The previous prime is 1138901. The next prime is 1138919. The reversal of 1138916 is 6198311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 729316 + 409600 = 854^2 + 640^2 .

It is not an unprimeable number, because it can be changed into a prime (1138919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142361 + ... + 142368.

It is an arithmetic number, because the mean of its divisors is an integer number (332185).

2^1138916 is an apocalyptic number.

It is an amenable number.

1138916 is a deficient number, since it is larger than the sum of its proper divisors (854194).

1138916 is a wasteful number, since it uses less digits than its factorization.

1138916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284733 (or 284731 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 1138916 is about 1067.2000749625. The cubic root of 1138916 is about 104.4312712457.

The spelling of 1138916 in words is "one million, one hundred thirty-eight thousand, nine hundred sixteen".