102279487 has 2 divisors, whose sum is σ = 102279488. Its totient is φ = 102279486.

The previous prime is 102279439. The next prime is 102279523. The reversal of 102279487 is 784972201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102279487 - 2²³ = 93890879 is a prime.

It is a super-2 number, since 2×102279487² = 20922186921966338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102279407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51139743 + 51139744.

It is an arithmetic number, because the mean of its divisors is an integer number (51139744).

Almost surely, 2^102279487 is an apocalyptic number.

102279487 is a deficient number, since it is larger than the sum of its proper divisors (1).

102279487 is an equidigital number, since it uses as much as digits as its factorization.

102279487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 102279487 is about 10113.3321412876. The cubic root of 102279487 is about 467.6592336985.

The spelling of 102279487 in words is "one hundred two million, two hundred seventy-nine thousand, four hundred eighty-seven".