29494921 has 4 divisors (see below), whose sum is σ = 29756052. Its totient is φ = 29233792.

The previous prime is 29494909. The next prime is 29494931. The reversal of 29494921 is 12949492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14167696 + 15327225 = 3764^2 + 3915^2 .

It is a cyclic number.

It is not a de Polignac number, because 29494921 - 2⁵ = 29494889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29494931) 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, 130396 + ... + 130621.

It is an arithmetic number, because the mean of its divisors is an integer number (7439013).

Almost surely, 2^29494921 is an apocalyptic number.

It is an amenable number.

29494921 is a deficient number, since it is larger than the sum of its proper divisors (261131).

29494921 is a wasteful number, since it uses less digits than its factorization.

29494921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261130.

The product of its digits is 46656, while the sum is 40.

The square root of 29494921 is about 5430.9226656251. The cubic root of 29494921 is about 308.9695965450.

The spelling of 29494921 in words is "twenty-nine million, four hundred ninety-four thousand, nine hundred twenty-one".