891429422 has 16 divisors (see below), whose sum is σ = 1515791760. Its totient is φ = 389774592.

The previous prime is 891429389. The next prime is 891429491. The reversal of 891429422 is 224924198.

It is a self number, because there is not a number n which added to its sum of digits gives 891429422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901763 + ... + 902750.

It is an arithmetic number, because the mean of its divisors is an integer number (94736985).

Almost surely, 2^891429422 is an apocalyptic number.

891429422 is a deficient number, since it is larger than the sum of its proper divisors (624362338).

891429422 is a wasteful number, since it uses less digits than its factorization.

891429422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804547.

The product of its digits is 82944, while the sum is 41.

The square root of 891429422 is about 29856.8153358659. The cubic root of 891429422 is about 962.4148629254.

The spelling of 891429422 in words is "eight hundred ninety-one million, four hundred twenty-nine thousand, four hundred twenty-two".