1139445946 has 8 divisors (see below), whose sum is σ = 1725763104. Its totient is φ = 564191580.

The previous prime is 1139445919. The next prime is 1139445947. The reversal of 1139445946 is 6495449311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1139445896 and 1139445905.

It is not an unprimeable number, because it can be changed into a prime (1139445947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765440 + ... + 2765851.

It is an arithmetic number, because the mean of its divisors is an integer number (215720388).

Almost surely, 2^1139445946 is an apocalyptic number.

1139445946 is a deficient number, since it is larger than the sum of its proper divisors (586317158).

1139445946 is a wasteful number, since it uses less digits than its factorization.

1139445946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531396.

The product of its digits is 466560, while the sum is 46.

The square root of 1139445946 is about 33755.6802034858. The cubic root of 1139445946 is about 1044.4746628054.

The spelling of 1139445946 in words is "one billion, one hundred thirty-nine million, four hundred forty-five thousand, nine hundred forty-six".