629407749 has 4 divisors (see below), whose sum is σ = 839210336. Its totient is φ = 419605164.

The previous prime is 629407741. The next prime is 629407759. The reversal of 629407749 is 947704926.

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 not a de Polignac number, because 629407749 - 2³ = 629407741 is a prime.

It is a super-2 number, since 2×629407749² = 792308229002494002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 629407698 and 629407707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629407741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104901289 + ... + 104901294.

It is an arithmetic number, because the mean of its divisors is an integer number (209802584).

Almost surely, 2^629407749 is an apocalyptic number.

It is an amenable number.

629407749 is a deficient number, since it is larger than the sum of its proper divisors (209802587).

629407749 is a wasteful number, since it uses less digits than its factorization.

629407749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209802586.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 629407749 is about 25088.0000996492. Note that the first 4 decimals coincide. The cubic root of 629407749 is about 856.9931721513.

The spelling of 629407749 in words is "six hundred twenty-nine million, four hundred seven thousand, seven hundred forty-nine".