938989749 has 16 divisors (see below), whose sum is σ = 1283486400. Its totient is φ = 610266240.

The previous prime is 938989741. The next prime is 938989771. The reversal of 938989749 is 947989839.

It is not a de Polignac number, because 938989749 - 2³ = 938989741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 938989749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938989741) 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, 256359 + ... + 259995.

It is an arithmetic number, because the mean of its divisors is an integer number (80217900).

Almost surely, 2^938989749 is an apocalyptic number.

It is an amenable number.

938989749 is a deficient number, since it is larger than the sum of its proper divisors (344496651).

938989749 is a wasteful number, since it uses less digits than its factorization.

938989749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5780.

The product of its digits is 35271936, while the sum is 66.

The square root of 938989749 is about 30642.9396272616. The cubic root of 938989749 is about 979.2350510606.

The spelling of 938989749 in words is "nine hundred thirty-eight million, nine hundred eighty-nine thousand, seven hundred forty-nine".