1172231409 has 16 divisors (see below), whose sum is σ = 1634688000. Its totient is φ = 745787856.

The previous prime is 1172231407. The next prime is 1172231419. The reversal of 1172231409 is 9041322711.

It is not a de Polignac number, because 1172231409 - 2¹ = 1172231407 is a prime.

It is a super-2 number, since 2×1172231409² = 2748252952492250562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1172231407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10942 + ... + 49640.

It is an arithmetic number, because the mean of its divisors is an integer number (102168000).

Almost surely, 2^1172231409 is an apocalyptic number.

It is an amenable number.

1172231409 is a deficient number, since it is larger than the sum of its proper divisors (462456591).

1172231409 is a wasteful number, since it uses less digits than its factorization.

1172231409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39164.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1172231409 is about 34237.8651349642. The cubic root of 1172231409 is about 1054.3977032798.

The spelling of 1172231409 in words is "one billion, one hundred seventy-two million, two hundred thirty-one thousand, four hundred nine".