898397278 has 4 divisors (see below), whose sum is σ = 1347595920. Its totient is φ = 449198638.

The previous prime is 898397233. The next prime is 898397281. The reversal of 898397278 is 872793898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872793898 = 2 ⋅436396949.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224599318 + ... + 224599321.

It is an arithmetic number, because the mean of its divisors is an integer number (336898980).

Almost surely, 2^898397278 is an apocalyptic number.

898397278 is a deficient number, since it is larger than the sum of its proper divisors (449198642).

898397278 is a wasteful number, since it uses less digits than its factorization.

898397278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449198641.

The product of its digits is 12192768, while the sum is 61.

The square root of 898397278 is about 29973.2760638539. The cubic root of 898397278 is about 964.9159288532.

The spelling of 898397278 in words is "eight hundred ninety-eight million, three hundred ninety-seven thousand, two hundred seventy-eight".