402623093 has 2 divisors, whose sum is σ = 402623094. Its totient is φ = 402623092.

The previous prime is 402623083. The next prime is 402623107. The reversal of 402623093 is 390326204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314601169 + 88021924 = 17737^2 + 9382^2 .

It is a cyclic number.

It is not a de Polignac number, because 402623093 - 2⁶ = 402623029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402623063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201311546 + 201311547.

It is an arithmetic number, because the mean of its divisors is an integer number (201311547).

Almost surely, 2^402623093 is an apocalyptic number.

It is an amenable number.

402623093 is a deficient number, since it is larger than the sum of its proper divisors (1).

402623093 is an equidigital number, since it uses as much as digits as its factorization.

402623093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 402623093 is about 20065.4701664327. The cubic root of 402623093 is about 738.4133847587.

Adding to 402623093 its reverse (390326204), we get a palindrome (792949297).

The spelling of 402623093 in words is "four hundred two million, six hundred twenty-three thousand, ninety-three".