1129931 has 8 divisors (see below), whose sum is σ = 1243200. Its totient is φ = 1018440.

The previous prime is 1129897. The next prime is 1129951. The reversal of 1129931 is 1399211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129931 is a prime.

It is a super-2 number, since 2×1129931² = 2553488129522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129931.

It is not an unprimeable number, because it can be changed into a prime (1129951) 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, 1160 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (155400).

2^1129931 is an apocalyptic number.

1129931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1129931 is a deficient number, since it is larger than the sum of its proper divisors (113269).

1129931 is a wasteful number, since it uses less digits than its factorization.

1129931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its digits is 486, while the sum is 26.

The square root of 1129931 is about 1062.9821259081. The cubic root of 1129931 is about 104.1559236565.

The spelling of 1129931 in words is "one million, one hundred twenty-nine thousand, nine hundred thirty-one".