9749388461 has 8 divisors (see below), whose sum is σ = 10088307480. Its totient is φ = 9410651712.

The previous prime is 9749388457. The next prime is 9749388469. The reversal of 9749388461 is 1648839479.

It can be written as a sum of positive squares in 4 ways, for example, as 2763604900 + 6985783561 = 52570^2 + 83581^2 .

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 9749388461 - 2² = 9749388457 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 9749388461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9749388469) 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, 68111 + ... + 155363.

It is an arithmetic number, because the mean of its divisors is an integer number (1261038435).

Almost surely, 2^9749388461 is an apocalyptic number.

It is an amenable number.

9749388461 is a deficient number, since it is larger than the sum of its proper divisors (338919019).

9749388461 is a wasteful number, since it uses less digits than its factorization.

9749388461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91135.

The product of its digits is 10450944, while the sum is 59.

The square root of 9749388461 is about 98738.9915940000. The cubic root of 9749388461 is about 2136.2846750020.

The spelling of 9749388461 in words is "nine billion, seven hundred forty-nine million, three hundred eighty-eight thousand, four hundred sixty-one".