426390169 has 8 divisors (see below), whose sum is σ = 448179840. Its totient is φ = 404871456.

The previous prime is 426390163. The next prime is 426390187. The reversal of 426390169 is 961093624.

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 426390169 - 2⁵ = 426390137 is a prime.

It is a super-2 number, since 2×426390169² = 363617152439697122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426390163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64509 + ... + 70810.

It is an arithmetic number, because the mean of its divisors is an integer number (56022480).

Almost surely, 2^426390169 is an apocalyptic number.

It is an amenable number.

426390169 is a deficient number, since it is larger than the sum of its proper divisors (21789671).

426390169 is a wasteful number, since it uses less digits than its factorization.

426390169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135479.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 426390169 is about 20649.2171522312. The cubic root of 426390169 is about 752.6661665473. Note that the first 3 decimals are identical.

The spelling of 426390169 in words is "four hundred twenty-six million, three hundred ninety thousand, one hundred sixty-nine".