422739291 has 32 divisors (see below), whose sum is σ = 624089088. Its totient is φ = 252904320.

The previous prime is 422739271. The next prime is 422739301. The reversal of 422739291 is 192937224.

It is not a de Polignac number, because 422739291 - 2¹⁴ = 422722907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (422739271) 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 31 ways as a sum of consecutive naturals, for example, 305421 + ... + 306801.

It is an arithmetic number, because the mean of its divisors is an integer number (19502784).

Almost surely, 2^422739291 is an apocalyptic number.

422739291 is a deficient number, since it is larger than the sum of its proper divisors (201349797).

422739291 is a wasteful number, since it uses less digits than its factorization.

422739291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611.

The product of its digits is 54432, while the sum is 39.

The square root of 422739291 is about 20560.6247716357. The cubic root of 422739291 is about 750.5118230812.

The spelling of 422739291 in words is "four hundred twenty-two million, seven hundred thirty-nine thousand, two hundred ninety-one".