1139913212 has 24 divisors (see below), whose sum is σ = 2092511232. Its totient is φ = 542313200.

The previous prime is 1139913211. The next prime is 1139913221. The reversal of 1139913212 is 2123199311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139913211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14864 + ... + 50007.

It is an arithmetic number, because the mean of its divisors is an integer number (87187968).

Almost surely, 2^1139913212 is an apocalyptic number.

It is an amenable number.

1139913212 is a deficient number, since it is larger than the sum of its proper divisors (952598020).

1139913212 is a wasteful number, since it uses less digits than its factorization.

1139913212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65089 (or 65087 counting only the distinct ones).

The product of its digits is 2916, while the sum is 32.

The square root of 1139913212 is about 33762.6007884464. The cubic root of 1139913212 is about 1044.6174166299.

The spelling of 1139913212 in words is "one billion, one hundred thirty-nine million, nine hundred thirteen thousand, two hundred twelve".