402355191 has 16 divisors (see below), whose sum is σ = 645382400. Its totient is φ = 217816128.

The previous prime is 402355097. The next prime is 402355223. The reversal of 402355191 is 191553204.

It is not a de Polignac number, because 402355191 - 2¹¹ = 402353143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402350191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503806 + ... + 504603.

It is an arithmetic number, because the mean of its divisors is an integer number (40336400).

Almost surely, 2^402355191 is an apocalyptic number.

402355191 is a deficient number, since it is larger than the sum of its proper divisors (243027209).

402355191 is a wasteful number, since it uses less digits than its factorization.

402355191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008438.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 402355191 is about 20058.7933585248. The cubic root of 402355191 is about 738.2495704133.

The spelling of 402355191 in words is "four hundred two million, three hundred fifty-five thousand, one hundred ninety-one".