978049801 has 4 divisors (see below), whose sum is σ = 984527104. Its totient is φ = 971572500.

The previous prime is 978049789. The next prime is 978049811. The reversal of 978049801 is 108940879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 978049801 - 2¹⁷ = 977918729 is a prime.

It is a super-2 number, since 2×978049801² = 1913162826472279202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978049811) 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, 3238425 + ... + 3238726.

It is an arithmetic number, because the mean of its divisors is an integer number (246131776).

Almost surely, 2^978049801 is an apocalyptic number.

It is an amenable number.

978049801 is a deficient number, since it is larger than the sum of its proper divisors (6477303).

978049801 is a wasteful number, since it uses less digits than its factorization.

978049801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477302.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 978049801 is about 31273.7877622779. The cubic root of 978049801 is about 992.6290698782.

The spelling of 978049801 in words is "nine hundred seventy-eight million, forty-nine thousand, eight hundred one".