999744629 has 8 divisors (see below), whose sum is σ = 1076902680. Its totient is φ = 922622976.

The previous prime is 999744617. The next prime is 999744667. The reversal of 999744629 is 926447999.

It can be written as a sum of positive squares in 4 ways, for example, as 174504100 + 825240529 = 13210^2 + 28727^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 999744629 - 2⁸ = 999744373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999744829) 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, 81209 + ... + 92705.

It is an arithmetic number, because the mean of its divisors is an integer number (134612835).

Almost surely, 2^999744629 is an apocalyptic number.

It is an amenable number.

999744629 is a deficient number, since it is larger than the sum of its proper divisors (77158051).

999744629 is a wasteful number, since it uses less digits than its factorization.

999744629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18199.

The product of its digits is 8817984, while the sum is 59.

The square root of 999744629 is about 31618.7385738268. The cubic root of 999744629 is about 999.9148690863.

The spelling of 999744629 in words is "nine hundred ninety-nine million, seven hundred forty-four thousand, six hundred twenty-nine".