87409277 has 8 divisors (see below), whose sum is σ = 90645240. Its totient is φ = 84188160.

The previous prime is 87409271. The next prime is 87409337. The reversal of 87409277 is 77290478.

It can be written as a sum of positive squares in 4 ways, for example, as 9369721 + 78039556 = 3061^2 + 8834^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87409277 - 2⁴ = 87409261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87409271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9077 + ... + 16037.

It is an arithmetic number, because the mean of its divisors is an integer number (11330655).

Almost surely, 2^87409277 is an apocalyptic number.

It is an amenable number.

87409277 is a deficient number, since it is larger than the sum of its proper divisors (3235963).

87409277 is a wasteful number, since it uses less digits than its factorization.

87409277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 87409277 is about 9349.2928609601. The cubic root of 87409277 is about 443.7985129266.

The spelling of 87409277 in words is "eighty-seven million, four hundred nine thousand, two hundred seventy-seven".