39998629 has 16 divisors (see below), whose sum is σ = 46428480. Its totient is φ = 34076160.

The previous prime is 39998611. The next prime is 39998659. The reversal of 39998629 is 92689993.

It is a cyclic number.

It is not a de Polignac number, because 39998629 - 2⁵ = 39998597 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 39998629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19287 + ... + 21259.

It is an arithmetic number, because the mean of its divisors is an integer number (2901780).

Almost surely, 2^39998629 is an apocalyptic number.

It is an amenable number.

39998629 is a deficient number, since it is larger than the sum of its proper divisors (6429851).

39998629 is a wasteful number, since it uses less digits than its factorization.

39998629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its digits is 1889568, while the sum is 55.

The square root of 39998629 is about 6324.4469323412. The cubic root of 39998629 is about 341.9912819957.

The spelling of 39998629 in words is "thirty-nine million, nine hundred ninety-eight thousand, six hundred twenty-nine".