229520477 has 4 divisors (see below), whose sum is σ = 229554816. Its totient is φ = 229486140.

The previous prime is 229520461. The next prime is 229520479. The reversal of 229520477 is 774025922.

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 229520477 - 2⁴ = 229520461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229520477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229520479) 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, 3533 + ... + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (57388704).

Almost surely, 2^229520477 is an apocalyptic number.

It is an amenable number.

229520477 is a deficient number, since it is larger than the sum of its proper divisors (34339).

229520477 is an equidigital number, since it uses as much as digits as its factorization.

229520477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34338.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 229520477 is about 15149.9332341763. The cubic root of 229520477 is about 612.2664739076.

Subtracting 229520477 from its reverse (774025922), we obtain a palindrome (544505445).

The spelling of 229520477 in words is "two hundred twenty-nine million, five hundred twenty thousand, four hundred seventy-seven".