29706989 has 6 divisors (see below), whose sum is σ = 32168106. Its totient is φ = 27421680.

The previous prime is 29706979. The next prime is 29706997. The reversal of 29706989 is 98960792.

It can be written as a sum of positive squares in 3 ways, for example, as 4489 + 29702500 = 67^2 + 5450^2 .

It is a de Polignac number, because none of the positive numbers 2^k-29706989 is a prime.

It is a super-2 number, since 2×29706989² = 1765010390892242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29706949) 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, 87722 + ... + 88059.

It is an arithmetic number, because the mean of its divisors is an integer number (5361351).

Almost surely, 2^29706989 is an apocalyptic number.

It is an amenable number.

29706989 is a deficient number, since it is larger than the sum of its proper divisors (2461117).

29706989 is a wasteful number, since it uses less digits than its factorization.

29706989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175807 (or 175794 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 29706989 is about 5450.4118193032. The cubic root of 29706989 is about 309.7083243335.

The spelling of 29706989 in words is "twenty-nine million, seven hundred six thousand, nine hundred eighty-nine".