1139648 has 14 divisors (see below), whose sum is σ = 2261616. Its totient is φ = 569792.

The previous prime is 1139623. The next prime is 1139669. The reversal of 1139648 is 8469311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8840 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (161544).

2^1139648 is an apocalyptic number.

It is an amenable number.

1139648 is a deficient number, since it is larger than the sum of its proper divisors (1121968).

1139648 is an equidigital number, since it uses as much as digits as its factorization.

1139648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17819 (or 17809 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 1139648 is about 1067.5429733739. The cubic root of 1139648 is about 104.4536396847.

The spelling of 1139648 in words is "one million, one hundred thirty-nine thousand, six hundred forty-eight".