1139456 has 18 divisors (see below), whose sum is σ = 2274972. Its totient is φ = 569600.

The previous prime is 1139423. The next prime is 1139461. The reversal of 1139456 is 6549311.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970 + ... + 2481.

2^1139456 is an apocalyptic number.

1139456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1139456 is a deficient number, since it is larger than the sum of its proper divisors (1135516).

1139456 is an frugal number, since it uses more digits than its factorization.

1139456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467 (or 4453 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 1139456 is about 1067.4530434637. The cubic root of 1139456 is about 104.4477734801.

The spelling of 1139456 in words is "one million, one hundred thirty-nine thousand, four hundred fifty-six".