940738986889 has 9 divisors (see below), whose sum is σ = 1018683680853. Its totient is φ = 868362810432.

The previous prime is 940738986857. The next prime is 940738986907. The reversal of 940738986889 is 988689837049.

The square root of 940738986889 is 969917.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41450924025 + 899288062864 = 203595^2 + 948308^2 .

It is not a de Polignac number, because 940738986889 - 2⁵ = 940738986857 is a prime.

It is a super-3 number, since 3×940738986889³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940738986829) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12571617 + ... + 12646225.

Almost surely, 2^940738986889 is an apocalyptic number.

940738986889 is the 969917-th square number.

940738986889 is the 484959-th centered octagonal number.

It is an amenable number.

940738986889 is a deficient number, since it is larger than the sum of its proper divisors (77944693964).

940738986889 is an frugal number, since it uses more digits than its factorization.

940738986889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149244 (or 74622 counting only the distinct ones).

The product of its (nonzero) digits is 1504935936, while the sum is 79.

The spelling of 940738986889 in words is "nine hundred forty billion, seven hundred thirty-eight million, nine hundred eighty-six thousand, eight hundred eighty-nine".