345457389 has 8 divisors (see below), whose sum is σ = 466919872. Its totient is φ = 227149920.

The previous prime is 345457381. The next prime is 345457403. The reversal of 345457389 is 983754543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345457389 - 2³ = 345457381 is a prime.

It is a super-2 number, since 2×345457389² = 238681615229394642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345457381) 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, 788497 + ... + 788934.

It is an arithmetic number, because the mean of its divisors is an integer number (58364984).

Almost surely, 2^345457389 is an apocalyptic number.

It is an amenable number.

345457389 is a deficient number, since it is larger than the sum of its proper divisors (121462483).

345457389 is a wasteful number, since it uses less digits than its factorization.

345457389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577507.

The product of its digits is 1814400, while the sum is 48.

The square root of 345457389 is about 18586.4840408292. The cubic root of 345457389 is about 701.6677167858.

The spelling of 345457389 in words is "three hundred forty-five million, four hundred fifty-seven thousand, three hundred eighty-nine".