351620469 has 24 divisors (see below), whose sum is σ = 550898712. Its totient is φ = 215239680.

The previous prime is 351620449. The next prime is 351620513. The reversal of 351620469 is 964026153.

It is a happy number.

351620469 is a `hidden beast` number, since 35 + 162 + 0 + 469 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 72897444 + 278723025 = 8538^2 + 16695^2 .

It is not a de Polignac number, because 351620469 - 2²⁸ = 83185013 is a prime.

It is a super-2 number, since 2×351620469² = 247273908439559922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351620449) 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 23 ways as a sum of consecutive naturals, for example, 21754 + ... + 34299.

It is an arithmetic number, because the mean of its divisors is an integer number (22954113).

Almost surely, 2^351620469 is an apocalyptic number.

It is an amenable number.

351620469 is a deficient number, since it is larger than the sum of its proper divisors (199278243).

351620469 is a wasteful number, since it uses less digits than its factorization.

351620469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56117 (or 56114 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 351620469 is about 18751.5457762820. The cubic root of 351620469 is about 705.8158112924.

The spelling of 351620469 in words is "three hundred fifty-one million, six hundred twenty thousand, four hundred sixty-nine".