394242737 has 8 divisors (see below), whose sum is σ = 450705216. Its totient is φ = 337815792.

The previous prime is 394242691. The next prime is 394242763. The reversal of 394242737 is 737242493.

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 394242737 - 2¹² = 394238641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394242694 and 394242703.

It is not an unprimeable number, because it can be changed into a prime (394242637) 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, 22118 + ... + 35744.

It is an arithmetic number, because the mean of its divisors is an integer number (56338152).

Almost surely, 2^394242737 is an apocalyptic number.

It is an amenable number.

394242737 is a deficient number, since it is larger than the sum of its proper divisors (56462479).

394242737 is a wasteful number, since it uses less digits than its factorization.

394242737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767.

The product of its digits is 254016, while the sum is 41.

The square root of 394242737 is about 19855.5467565111. The cubic root of 394242737 is about 733.2542132041.

The spelling of 394242737 in words is "three hundred ninety-four million, two hundred forty-two thousand, seven hundred thirty-seven".