898405394 has 4 divisors (see below), whose sum is σ = 1347608094. Its totient is φ = 449202696.

The previous prime is 898405351. The next prime is 898405397. The reversal of 898405394 is 493504898.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 574225369 + 324180025 = 23963^2 + 18005^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (898405397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224601347 + ... + 224601350.

Almost surely, 2^898405394 is an apocalyptic number.

898405394 is a deficient number, since it is larger than the sum of its proper divisors (449202700).

898405394 is a wasteful number, since it uses less digits than its factorization.

898405394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449202699.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 898405394 is about 29973.4114508175. The cubic root of 898405394 is about 964.9188344846.

The spelling of 898405394 in words is "eight hundred ninety-eight million, four hundred five thousand, three hundred ninety-four".