402394071 has 8 divisors (see below), whose sum is σ = 540442224. Its totient is φ = 266304320.

The previous prime is 402394037. The next prime is 402394081. The reversal of 402394071 is 170493204.

It is a happy number.

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 402394071 - 2⁶ = 402394007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402394001) 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, 489120 + ... + 489941.

It is an arithmetic number, because the mean of its divisors is an integer number (67555278).

Almost surely, 2^402394071 is an apocalyptic number.

402394071 is a deficient number, since it is larger than the sum of its proper divisors (138048153).

402394071 is a wasteful number, since it uses less digits than its factorization.

402394071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979201.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 402394071 is about 20059.7624861313. The cubic root of 402394071 is about 738.2733489217.

The spelling of 402394071 in words is "four hundred two million, three hundred ninety-four thousand, seventy-one".