977407442 has 32 divisors (see below), whose sum is σ = 1631746944. Its totient is φ = 435366400.

The previous prime is 977407433. The next prime is 977407489. The reversal of 977407442 is 244704779.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 977407393 and 977407402.

It is an unprimeable number.

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, 268418 + ... + 272034.

It is an arithmetic number, because the mean of its divisors is an integer number (50992092).

Almost surely, 2^977407442 is an apocalyptic number.

977407442 is a deficient number, since it is larger than the sum of its proper divisors (654339502).

977407442 is a wasteful number, since it uses less digits than its factorization.

977407442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 977407442 is about 31263.5161490195. The cubic root of 977407442 is about 992.4117108511.

Adding to 977407442 its reverse (244704779), we get a palindrome (1222112221).

The spelling of 977407442 in words is "nine hundred seventy-seven million, four hundred seven thousand, four hundred forty-two".