977874427 has 2 divisors, whose sum is σ = 977874428. Its totient is φ = 977874426.

The previous prime is 977874407. The next prime is 977874431. The reversal of 977874427 is 724478779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977874427 - 2²³ = 969485819 is a prime.

It is a super-4 number, since 4×977874427⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (977874407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488937213 + 488937214.

It is an arithmetic number, because the mean of its divisors is an integer number (488937214).

Almost surely, 2^977874427 is an apocalyptic number.

977874427 is a deficient number, since it is larger than the sum of its proper divisors (1).

977874427 is an equidigital number, since it uses as much as digits as its factorization.

977874427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5531904, while the sum is 55.

The square root of 977874427 is about 31270.9837868910. The cubic root of 977874427 is about 992.5697369294.

The spelling of 977874427 in words is "nine hundred seventy-seven million, eight hundred seventy-four thousand, four hundred twenty-seven".