977279445 has 16 divisors (see below), whose sum is σ = 1737385920. Its totient is φ = 521215632.

The previous prime is 977279431. The next prime is 977279449. The reversal of 977279445 is 544972779.

It is not a de Polignac number, because 977279445 - 2¹² = 977275349 is a prime.

It is a super-2 number, since 2×977279445² = 1910150227239016050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 977279391 and 977279400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977279449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3619419 + ... + 3619688.

It is an arithmetic number, because the mean of its divisors is an integer number (108586620).

Almost surely, 2^977279445 is an apocalyptic number.

It is an amenable number.

977279445 is a deficient number, since it is larger than the sum of its proper divisors (760106475).

977279445 is a wasteful number, since it uses less digits than its factorization.

977279445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239121 (or 7239115 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 977279445 is about 31261.4690153870. The cubic root of 977279445 is about 992.3683883288.

The spelling of 977279445 in words is "nine hundred seventy-seven million, two hundred seventy-nine thousand, four hundred forty-five".