980378721 has 75 divisors (see below), whose sum is σ = 1732903073. Its totient is φ = 552326040.

The previous prime is 980378599. The next prime is 980378741. The reversal of 980378721 is 127873089.

The square root of 980378721 is 31311.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 980378721 - 2¹⁹ = 979854433 is a prime.

It is a super-2 number, since 2×980378721² = 1922284873179191682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980378741) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 13808116 + ... + 13808186.

Almost surely, 2^980378721 is an apocalyptic number.

980378721 is the 31311-st square number.

980378721 is the 15656-th centered octagonal number.

It is an amenable number.

980378721 is a deficient number, since it is larger than the sum of its proper divisors (752524352).

980378721 is an frugal number, since it uses more digits than its factorization.

980378721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The cubic root of 980378721 is about 993.4163239997.

The spelling of 980378721 in words is "nine hundred eighty million, three hundred seventy-eight thousand, seven hundred twenty-one".