402624247 has 2 divisors, whose sum is σ = 402624248. Its totient is φ = 402624246.

The previous prime is 402624169. The next prime is 402624251. The reversal of 402624247 is 742426204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402624247 - 2¹⁵ = 402591479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402624647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201312123 + 201312124.

It is an arithmetic number, because the mean of its divisors is an integer number (201312124).

Almost surely, 2^402624247 is an apocalyptic number.

402624247 is a deficient number, since it is larger than the sum of its proper divisors (1).

402624247 is an equidigital number, since it uses as much as digits as its factorization.

402624247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 402624247 is about 20065.4989222795. The cubic root of 402624247 is about 738.4140902393.

The spelling of 402624247 in words is "four hundred two million, six hundred twenty-four thousand, two hundred forty-seven".