29148869 has 4 divisors (see below), whose sum is σ = 30683040. Its totient is φ = 27614700.

The previous prime is 29148851. The next prime is 29148901. The reversal of 29148869 is 96884192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29148869 - 2¹⁶ = 29083333 is a prime.

It is a super-2 number, since 2×29148869² = 1699313127958322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29148809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767057 + ... + 767094.

It is an arithmetic number, because the mean of its divisors is an integer number (7670760).

Almost surely, 2^29148869 is an apocalyptic number.

It is an amenable number.

29148869 is a deficient number, since it is larger than the sum of its proper divisors (1534171).

29148869 is a wasteful number, since it uses less digits than its factorization.

29148869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534170.

The product of its digits is 248832, while the sum is 47.

The square root of 29148869 is about 5398.9692534779. The cubic root of 29148869 is about 307.7565013388.

The spelling of 29148869 in words is "twenty-nine million, one hundred forty-eight thousand, eight hundred sixty-nine".