629939451 has 8 divisors (see below), whose sum is σ = 848074240. Its totient is φ = 415882152.

The previous prime is 629939447. The next prime is 629939459. The reversal of 629939451 is 154939926.

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

It is not a de Polignac number, because 629939451 - 2² = 629939447 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 629939451.

It is not an unprimeable number, because it can be changed into a prime (629939459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019011 + ... + 1019628.

It is an arithmetic number, because the mean of its divisors is an integer number (106009280).

Almost surely, 2^629939451 is an apocalyptic number.

629939451 is a deficient number, since it is larger than the sum of its proper divisors (218134789).

629939451 is a wasteful number, since it uses less digits than its factorization.

629939451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038745.

The product of its digits is 524880, while the sum is 48.

The square root of 629939451 is about 25098.5946020888. The cubic root of 629939451 is about 857.2344236742.

The spelling of 629939451 in words is "six hundred twenty-nine million, nine hundred thirty-nine thousand, four hundred fifty-one".