978862454 has 16 divisors (see below), whose sum is σ = 1544762016. Its totient is φ = 464587200.

The previous prime is 978862453. The next prime is 978862471. The reversal of 978862454 is 454268879.

It is a junction number, because it is equal to n+sod(n) for n = 978862396 and 978862405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978862453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158282 + ... + 164349.

It is an arithmetic number, because the mean of its divisors is an integer number (96547626).

Almost surely, 2^978862454 is an apocalyptic number.

978862454 is a deficient number, since it is larger than the sum of its proper divisors (565899562).

978862454 is a wasteful number, since it uses less digits than its factorization.

978862454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322711.

The product of its digits is 3870720, while the sum is 53.

The square root of 978862454 is about 31286.7776225037. Note that the first 3 decimals coincide. The cubic root of 978862454 is about 992.9039160320.

The spelling of 978862454 in words is "nine hundred seventy-eight million, eight hundred sixty-two thousand, four hundred fifty-four".