207438394 has 8 divisors (see below), whose sum is σ = 313911540. Its totient is φ = 102801216.

The previous prime is 207438389. The next prime is 207438419. The reversal of 207438394 is 493834702.

It can be written as a sum of positive squares in 2 ways, for example, as 203490225 + 3948169 = 14265^2 + 1987^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458709 + ... + 459160.

Almost surely, 2^207438394 is an apocalyptic number.

207438394 is a deficient number, since it is larger than the sum of its proper divisors (106473146).

207438394 is a wasteful number, since it uses less digits than its factorization.

207438394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917984.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 207438394 is about 14402.7217566681. The cubic root of 207438394 is about 591.9654780362.

The spelling of 207438394 in words is "two hundred seven million, four hundred thirty-eight thousand, three hundred ninety-four".