402173047 has 2 divisors, whose sum is σ = 402173048. Its totient is φ = 402173046.

The previous prime is 402173041. The next prime is 402173099. The reversal of 402173047 is 740371204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402173047 - 2⁷ = 402172919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402173041) 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 as a sum of consecutive naturals, namely, 201086523 + 201086524.

It is an arithmetic number, because the mean of its divisors is an integer number (201086524).

Almost surely, 2^402173047 is an apocalyptic number.

402173047 is a deficient number, since it is larger than the sum of its proper divisors (1).

402173047 is an equidigital number, since it uses as much as digits as its factorization.

402173047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 402173047 is about 20054.2525914081. The cubic root of 402173047 is about 738.1381530812.

It can be divided in two parts, 40217 and 3047, that added together give a square (43264 = 208²).

The spelling of 402173047 in words is "four hundred two million, one hundred seventy-three thousand, forty-seven".