1010402389 has 2 divisors, whose sum is σ = 1010402390. Its totient is φ = 1010402388.

The previous prime is 1010402377. The next prime is 1010402453. The reversal of 1010402389 is 9832040101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625850289 + 384552100 = 25017^2 + 19610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010402389 - 2⁹ = 1010401877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010402339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505201194 + 505201195.

It is an arithmetic number, because the mean of its divisors is an integer number (505201195).

Almost surely, 2^1010402389 is an apocalyptic number.

It is an amenable number.

1010402389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010402389 is an equidigital number, since it uses as much as digits as its factorization.

1010402389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1010402389 is about 31786.8272874158. The cubic root of 1010402389 is about 1003.4555087060.

The spelling of 1010402389 in words is "one billion, ten million, four hundred two thousand, three hundred eighty-nine".