978383401 has 4 divisors (see below), whose sum is σ = 978483652. Its totient is φ = 978283152.

The previous prime is 978383383. The next prime is 978383437. The reversal of 978383401 is 104383879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 298425625 + 679957776 = 17275^2 + 26076^2 .

It is a cyclic number.

It is not a de Polignac number, because 978383401 - 2¹¹ = 978381353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978383501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33690 + ... + 55603.

It is an arithmetic number, because the mean of its divisors is an integer number (244620913).

Almost surely, 2^978383401 is an apocalyptic number.

It is an amenable number.

978383401 is a deficient number, since it is larger than the sum of its proper divisors (100251).

978383401 is a wasteful number, since it uses less digits than its factorization.

978383401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100250.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 978383401 is about 31279.1208476197. The cubic root of 978383401 is about 992.7419146485.

The spelling of 978383401 in words is "nine hundred seventy-eight million, three hundred eighty-three thousand, four hundred one".