1139438245 has 12 divisors (see below), whose sum is σ = 1502929260. Its totient is φ = 828681920.

The previous prime is 1139438231. The next prime is 1139438281. The reversal of 1139438245 is 5428349311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 796707076 + 342731169 = 28226^2 + 18513^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1139438245 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1139438198 and 1139438207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 941080 + ... + 942289.

It is an arithmetic number, because the mean of its divisors is an integer number (125244105).

Almost surely, 2^1139438245 is an apocalyptic number.

It is an amenable number.

1139438245 is a deficient number, since it is larger than the sum of its proper divisors (363491015).

1139438245 is a wasteful number, since it uses less digits than its factorization.

1139438245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883396 (or 1883385 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 1139438245 is about 33755.5661336023. The cubic root of 1139438245 is about 1044.4723097561.

The spelling of 1139438245 in words is "one billion, one hundred thirty-nine million, four hundred thirty-eight thousand, two hundred forty-five".