29490905 has 16 divisors (see below), whose sum is σ = 36727680. Its totient is φ = 22716288.

The previous prime is 29490893. The next prime is 29490913. The reversal of 29490905 is 50909492.

It is a cyclic number.

It is not a de Polignac number, because 29490905 - 2⁶ = 29490841 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14756 + ... + 16634.

It is an arithmetic number, because the mean of its divisors is an integer number (2295480).

Almost surely, 2^29490905 is an apocalyptic number.

It is an amenable number.

29490905 is a deficient number, since it is larger than the sum of its proper divisors (7236775).

29490905 is a wasteful number, since it uses less digits than its factorization.

29490905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 29490905 is about 5430.5529184421. The cubic root of 29490905 is about 308.9555729077.

The spelling of 29490905 in words is "twenty-nine million, four hundred ninety thousand, nine hundred five".