418872749 has 4 divisors (see below), whose sum is σ = 418954140. Its totient is φ = 418791360.

The previous prime is 418872743. The next prime is 418872791. The reversal of 418872749 is 947278814.

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 195160900 + 223711849 = 13970^2 + 14957^2 .

It is a cyclic number.

It is not a de Polignac number, because 418872749 - 2²⁸ = 150437293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 418872697 and 418872706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418872743) 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, 32414 + ... + 43455.

It is an arithmetic number, because the mean of its divisors is an integer number (104738535).

Almost surely, 2^418872749 is an apocalyptic number.

It is an amenable number.

418872749 is a deficient number, since it is larger than the sum of its proper divisors (81391).

418872749 is an equidigital number, since it uses as much as digits as its factorization.

418872749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81390.

The product of its digits is 903168, while the sum is 50.

The square root of 418872749 is about 20466.3809453455. The cubic root of 418872749 is about 748.2166512134.

The spelling of 418872749 in words is "four hundred eighteen million, eight hundred seventy-two thousand, seven hundred forty-nine".