9739905 has 16 divisors (see below), whose sum is σ = 17810304. Its totient is φ = 4452480.

The previous prime is 9739903. The next prime is 9739907. The reversal of 9739905 is 5099379.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9739903) and next prime (9739907).

It is not a de Polignac number, because 9739905 - 2¹ = 9739903 is a prime.

9739905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9739901) 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, 46276 + ... + 46485.

It is an arithmetic number, because the mean of its divisors is an integer number (1113144).

Almost surely, 2^9739905 is an apocalyptic number.

It is an amenable number.

9739905 is a deficient number, since it is larger than the sum of its proper divisors (8070399).

9739905 is a wasteful number, since it uses less digits than its factorization.

9739905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92776.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 9739905 is about 3120.8820868466. The cubic root of 9739905 is about 213.5591778726.

It can be divided in two parts, 973 and 9905, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 9739905 in words is "nine million, seven hundred thirty-nine thousand, nine hundred five".