393107961 has 8 divisors (see below), whose sum is σ = 531967264. Its totient is φ = 258160320.

The previous prime is 393107951. The next prime is 393107969. The reversal of 393107961 is 169701393.

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

It is not a de Polignac number, because 393107961 - 2¹⁴ = 393091577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393107969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977680 + ... + 978081.

It is an arithmetic number, because the mean of its divisors is an integer number (66495908).

Almost surely, 2^393107961 is an apocalyptic number.

It is an amenable number.

393107961 is a deficient number, since it is larger than the sum of its proper divisors (138859303).

393107961 is a wasteful number, since it uses less digits than its factorization.

393107961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955831.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 393107961 is about 19826.9503706445. The cubic root of 393107961 is about 732.5500117670.

The spelling of 393107961 in words is "three hundred ninety-three million, one hundred seven thousand, nine hundred sixty-one".