29131489 has 6 divisors (see below), whose sum is σ = 30946214. Its totient is φ = 27417600.

The previous prime is 29131483. The next prime is 29131517. The reversal of 29131489 is 98413192.

It can be written as a sum of positive squares in 3 ways, for example, as 2505889 + 26625600 = 1583^2 + 5160^2 .

It is not a de Polignac number, because 29131489 - 2²³ = 20742881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29131483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50112 + ... + 50689.

Almost surely, 2^29131489 is an apocalyptic number.

It is an amenable number.

29131489 is a deficient number, since it is larger than the sum of its proper divisors (1814725).

29131489 is a wasteful number, since it uses less digits than its factorization.

29131489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100835 (or 100818 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 29131489 is about 5397.3594469889. The cubic root of 29131489 is about 307.6953226195.

The spelling of 29131489 in words is "twenty-nine million, one hundred thirty-one thousand, four hundred eighty-nine".