87246479 has 2 divisors, whose sum is σ = 87246480. Its totient is φ = 87246478.

The previous prime is 87246457. The next prime is 87246487. The reversal of 87246479 is 97464278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87246479 is a prime.

It is a super-2 number, since 2×87246479² = 15223896195794882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87246779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43623239 + 43623240.

It is an arithmetic number, because the mean of its divisors is an integer number (43623240).

Almost surely, 2^87246479 is an apocalyptic number.

87246479 is a deficient number, since it is larger than the sum of its proper divisors (1).

87246479 is an equidigital number, since it uses as much as digits as its factorization.

87246479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 87246479 is about 9340.5823694243. The cubic root of 87246479 is about 443.5228197978.

The spelling of 87246479 in words is "eighty-seven million, two hundred forty-six thousand, four hundred seventy-nine".