629445842 has 8 divisors (see below), whose sum is σ = 999708156. Its totient is φ = 296209792.

The previous prime is 629445833. The next prime is 629445871. The reversal of 629445842 is 248544926.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 539214841 + 90231001 = 23221^2 + 9499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×629445842² = 792404136022177928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 629445793 and 629445802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9256523 + ... + 9256590.

Almost surely, 2^629445842 is an apocalyptic number.

629445842 is a deficient number, since it is larger than the sum of its proper divisors (370262314).

629445842 is a wasteful number, since it uses less digits than its factorization.

629445842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18513132.

The product of its digits is 552960, while the sum is 44.

The square root of 629445842 is about 25088.7592758191. The cubic root of 629445842 is about 857.0104607757.

It can be divided in two parts, 62944 and 5842, that added together give a palindrome (68786).

The spelling of 629445842 in words is "six hundred twenty-nine million, four hundred forty-five thousand, eight hundred forty-two".