87402379 has 2 divisors, whose sum is σ = 87402380. Its totient is φ = 87402378.

The previous prime is 87402331. The next prime is 87402421. The reversal of 87402379 is 97320478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87402379 - 2¹¹ = 87400331 is a prime.

It is not a weakly prime, because it can be changed into another prime (87402079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43701189 + 43701190.

It is an arithmetic number, because the mean of its divisors is an integer number (43701190).

Almost surely, 2^87402379 is an apocalyptic number.

87402379 is a deficient number, since it is larger than the sum of its proper divisors (1).

87402379 is an equidigital number, since it uses as much as digits as its factorization.

87402379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 87402379 is about 9348.9239487761. The cubic root of 87402379 is about 443.7868383356.

The spelling of 87402379 in words is "eighty-seven million, four hundred two thousand, three hundred seventy-nine".