9640451 has 4 divisors (see below), whose sum is σ = 9776304. Its totient is φ = 9504600.

The previous prime is 9640447. The next prime is 9640457. The reversal of 9640451 is 1540469.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9640451 - 2² = 9640447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9640457) 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, 67820 + ... + 67961.

It is an arithmetic number, because the mean of its divisors is an integer number (2444076).

Almost surely, 2^9640451 is an apocalyptic number.

9640451 is a deficient number, since it is larger than the sum of its proper divisors (135853).

9640451 is a wasteful number, since it uses less digits than its factorization.

9640451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135852.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 9640451 is about 3104.9075670622. The cubic root of 9640451 is about 212.8298066654.

The spelling of 9640451 in words is "nine million, six hundred forty thousand, four hundred fifty-one".