976969421 has 2 divisors, whose sum is σ = 976969422. Its totient is φ = 976969420.

The previous prime is 976969381. The next prime is 976969463. The reversal of 976969421 is 124969679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731702500 + 245266921 = 27050^2 + 15661^2 .

It is an emirp because it is prime and its reverse (124969679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 976969421 - 2²² = 972775117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (976969921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488484710 + 488484711.

It is an arithmetic number, because the mean of its divisors is an integer number (488484711).

Almost surely, 2^976969421 is an apocalyptic number.

It is an amenable number.

976969421 is a deficient number, since it is larger than the sum of its proper divisors (1).

976969421 is an equidigital number, since it uses as much as digits as its factorization.

976969421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 976969421 is about 31256.5100579063. The cubic root of 976969421 is about 992.2634403335.

The spelling of 976969421 in words is "nine hundred seventy-six million, nine hundred sixty-nine thousand, four hundred twenty-one".