9951738 has 8 divisors (see below), whose sum is σ = 19903488. Its totient is φ = 3317244.

The previous prime is 9951737. The next prime is 9951743. The reversal of 9951738 is 8371599.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

9951738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 9951738.

It is not an unprimeable number, because it can be changed into a prime (9951731) 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, 829306 + ... + 829317.

It is an arithmetic number, because the mean of its divisors is an integer number (2487936).

Almost surely, 2^9951738 is an apocalyptic number.

9951738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9951738 is a wasteful number, since it uses less digits than its factorization.

9951738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658628.

The product of its digits is 68040, while the sum is 42.

The square root of 9951738 is about 3154.6375386088. The cubic root of 9951738 is about 215.0963188407.

The spelling of 9951738 in words is "nine million, nine hundred fifty-one thousand, seven hundred thirty-eight".