427538977 has 2 divisors, whose sum is σ = 427538978. Its totient is φ = 427538976.

The previous prime is 427538897. The next prime is 427538983. The reversal of 427538977 is 779835724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426381201 + 1157776 = 20649^2 + 1076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427538977 is a prime.

It is not a weakly prime, because it can be changed into another prime (427538987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213769488 + 213769489.

It is an arithmetic number, because the mean of its divisors is an integer number (213769489).

Almost surely, 2^427538977 is an apocalyptic number.

It is an amenable number.

427538977 is a deficient number, since it is larger than the sum of its proper divisors (1).

427538977 is an equidigital number, since it uses as much as digits as its factorization.

427538977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 52.

The square root of 427538977 is about 20677.0156695786. The cubic root of 427538977 is about 753.3415210212.

The spelling of 427538977 in words is "four hundred twenty-seven million, five hundred thirty-eight thousand, nine hundred seventy-seven".