87913403 has 2 divisors, whose sum is σ = 87913404. Its totient is φ = 87913402.

The previous prime is 87913387. The next prime is 87913421. The reversal of 87913403 is 30431978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87913403 - 2⁴ = 87913387 is a prime.

It is not a weakly prime, because it can be changed into another prime (87913493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43956701 + 43956702.

It is an arithmetic number, because the mean of its divisors is an integer number (43956702).

Almost surely, 2^87913403 is an apocalyptic number.

87913403 is a deficient number, since it is larger than the sum of its proper divisors (1).

87913403 is an equidigital number, since it uses as much as digits as its factorization.

87913403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 87913403 is about 9376.2147479673. The cubic root of 87913403 is about 444.6500687111.

The spelling of 87913403 in words is "eighty-seven million, nine hundred thirteen thousand, four hundred three".