631969449 has 8 divisors (see below), whose sum is σ = 863177952. Its totient is φ = 411036960.

The previous prime is 631969447. The next prime is 631969451. The reversal of 631969449 is 944969136.

631969449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (631969447) and next prime (631969451).

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

It is not a de Polignac number, because 631969449 - 2¹ = 631969447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631969447) 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, 2568859 + ... + 2569104.

It is an arithmetic number, because the mean of its divisors is an integer number (107897244).

Almost surely, 2^631969449 is an apocalyptic number.

It is an amenable number.

631969449 is a deficient number, since it is larger than the sum of its proper divisors (231208503).

631969449 is a wasteful number, since it uses less digits than its factorization.

631969449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138007.

The product of its digits is 1259712, while the sum is 51.

The square root of 631969449 is about 25139.0025458450. The cubic root of 631969449 is about 858.1542571797.

The spelling of 631969449 in words is "six hundred thirty-one million, nine hundred sixty-nine thousand, four hundred forty-nine".