6629399 has 16 divisors (see below), whose sum is σ = 7838208. Its totient is φ = 5489952.

The previous prime is 6629393. The next prime is 6629407. The reversal of 6629399 is 9939266.

It is not a de Polignac number, because 6629399 - 2⁴ = 6629383 is a prime.

It is a super-2 number, since 2×6629399² = 87897862202402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39614 + ... + 39780.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^6629399 is an apocalyptic number.

6629399 is a deficient number, since it is larger than the sum of its proper divisors (1208809).

6629399 is a wasteful number, since it uses less digits than its factorization.

6629399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its digits is 157464, while the sum is 44.

The square root of 6629399 is about 2574.7619307423. The cubic root of 6629399 is about 187.8558480761.

The spelling of 6629399 in words is "six million, six hundred twenty-nine thousand, three hundred ninety-nine".