385908434 has 4 divisors (see below), whose sum is σ = 578862654. Its totient is φ = 192954216.

The previous prime is 385908407. The next prime is 385908463. The reversal of 385908434 is 434809583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434809583 = 13 ⋅33446891.

It can be written as a sum of positive squares in only one way, i.e., 295943209 + 89965225 = 17203^2 + 9485^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96477107 + ... + 96477110.

Almost surely, 2^385908434 is an apocalyptic number.

385908434 is a deficient number, since it is larger than the sum of its proper divisors (192954220).

385908434 is a wasteful number, since it uses less digits than its factorization.

385908434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192954219.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 385908434 is about 19644.5522728313. The cubic root of 385908434 is about 728.0503640739.

The spelling of 385908434 in words is "three hundred eighty-five million, nine hundred eight thousand, four hundred thirty-four".