7898406 has 8 divisors (see below), whose sum is σ = 15796824. Its totient is φ = 2632800.

The previous prime is 7898393. The next prime is 7898413. The reversal of 7898406 is 6048987.

It is a happy number.

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

7898406 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658195 + ... + 658206.

It is an arithmetic number, because the mean of its divisors is an integer number (1974603).

Almost surely, 2^7898406 is an apocalyptic number.

7898406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7898406 is a wasteful number, since it uses less digits than its factorization.

7898406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316406.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 7898406 is about 2810.4102903313. The cubic root of 7898406 is about 199.1497740342.

The spelling of 7898406 in words is "seven million, eight hundred ninety-eight thousand, four hundred six".