229400439813 has 6 divisors (see below), whose sum is σ = 331356190854. Its totient is φ = 152933626536.

The previous prime is 229400439803. The next prime is 229400439833. The reversal of 229400439813 is 318934004922.

229400439813 is a `hidden beast` number, since 229 + 400 + 4 + 3 + 9 + 8 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169758008289 + 59642431524 = 412017^2 + 244218^2 .

It is not a de Polignac number, because 229400439813 - 2⁸ = 229400439557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229400439803) 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, 12744468870 + ... + 12744468887.

It is an arithmetic number, because the mean of its divisors is an integer number (55226031809).

Almost surely, 2^229400439813 is an apocalyptic number.

It is an amenable number.

229400439813 is a deficient number, since it is larger than the sum of its proper divisors (101955751041).

229400439813 is a wasteful number, since it uses less digits than its factorization.

229400439813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25488937763 (or 25488937760 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 229400439813 in words is "two hundred twenty-nine billion, four hundred million, four hundred thirty-nine thousand, eight hundred thirteen".