1401010309 has 2 divisors, whose sum is σ = 1401010310. Its totient is φ = 1401010308.

The previous prime is 1401010301. The next prime is 1401010319. The reversal of 1401010309 is 9030101041.

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., 1395022500 + 5987809 = 37350^2 + 2447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401010309 - 2³ = 1401010301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401010301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700505154 + 700505155.

It is an arithmetic number, because the mean of its divisors is an integer number (700505155).

Almost surely, 2^1401010309 is an apocalyptic number.

It is an amenable number.

1401010309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401010309 is an equidigital number, since it uses as much as digits as its factorization.

1401010309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1401010309 is about 37430.0722548060. The cubic root of 1401010309 is about 1118.9579777340.

The spelling of 1401010309 in words is "one billion, four hundred one million, ten thousand, three hundred nine".