9959140951 has 4 divisors (see below), whose sum is σ = 9960399592. Its totient is φ = 9957882312.

The previous prime is 9959140949. The next prime is 9959140969. The reversal of 9959140951 is 1590419599.

It is a happy number.

9959140951 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1590419599 = 277 ⋅5741587.

It is a cyclic number.

It is not a de Polignac number, because 9959140951 - 2¹ = 9959140949 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 (9959143951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617376 + ... + 633301.

It is an arithmetic number, because the mean of its divisors is an integer number (2490099898).

Almost surely, 2^9959140951 is an apocalyptic number.

9959140951 is a deficient number, since it is larger than the sum of its proper divisors (1258641).

9959140951 is a wasteful number, since it uses less digits than its factorization.

9959140951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258640.

The product of its (nonzero) digits is 656100, while the sum is 52.

The square root of 9959140951 is about 99795.4956448436. The cubic root of 9959140951 is about 2151.4964127982.

The spelling of 9959140951 in words is "nine billion, nine hundred fifty-nine million, one hundred forty thousand, nine hundred fifty-one".