87269477 has 2 divisors, whose sum is σ = 87269478. Its totient is φ = 87269476.

The previous prime is 87269473. The next prime is 87269491. The reversal of 87269477 is 77496278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 25897921 = 7834^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 87269477 - 2² = 87269473 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87269471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43634738 + 43634739.

It is an arithmetic number, because the mean of its divisors is an integer number (43634739).

Almost surely, 2^87269477 is an apocalyptic number.

It is an amenable number.

87269477 is a deficient number, since it is larger than the sum of its proper divisors (1).

87269477 is an equidigital number, since it uses as much as digits as its factorization.

87269477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The square root of 87269477 is about 9341.8133678639. The cubic root of 87269477 is about 443.5617869547.

The spelling of 87269477 in words is "eighty-seven million, two hundred sixty-nine thousand, four hundred seventy-seven".