394023261 has 8 divisors (see below), whose sum is σ = 543480480. Its totient is φ = 253624112.

The previous prime is 394023247. The next prime is 394023283. The reversal of 394023261 is 162320493.

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

It is a cyclic number.

It is not a de Polignac number, because 394023261 - 2⁹ = 394022749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2264415 + ... + 2264588.

It is an arithmetic number, because the mean of its divisors is an integer number (67935060).

Almost surely, 2^394023261 is an apocalyptic number.

It is an amenable number.

394023261 is a deficient number, since it is larger than the sum of its proper divisors (149457219).

394023261 is a wasteful number, since it uses less digits than its factorization.

394023261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4529035.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 394023261 is about 19850.0191687565. The cubic root of 394023261 is about 733.1181197439.

The spelling of 394023261 in words is "three hundred ninety-four million, twenty-three thousand, two hundred sixty-one".