29813913 has 14 divisors (see below), whose sum is σ = 44701514. Its totient is φ = 19875456.

The previous prime is 29813899. The next prime is 29813923. The reversal of 29813913 is 31931892.

It can be written as a sum of positive squares in only one way, i.e., 28869129 + 944784 = 5373^2 + 972^2 .

It is not a de Polignac number, because 29813913 - 2⁵ = 29813881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29813923) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 19720 + ... + 21177.

Almost surely, 2^29813913 is an apocalyptic number.

It is an amenable number.

29813913 is a deficient number, since it is larger than the sum of its proper divisors (14887601).

29813913 is an frugal number, since it uses more digits than its factorization.

29813913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40915 (or 40900 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 29813913 is about 5460.2118090785. The cubic root of 29813913 is about 310.0794558730.

The spelling of 29813913 in words is "twenty-nine million, eight hundred thirteen thousand, nine hundred thirteen".