1400002073 has 4 divisors (see below), whose sum is σ = 1400218548. Its totient is φ = 1399785600.

The previous prime is 1400002001. The next prime is 1400002147. The reversal of 1400002073 is 3702000041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588208009 + 811794064 = 24253^2 + 28492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400002073 - 2⁸ = 1400001817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400002573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98228 + ... + 111573.

It is an arithmetic number, because the mean of its divisors is an integer number (350054637).

Almost surely, 2^1400002073 is an apocalyptic number.

It is an amenable number.

1400002073 is a deficient number, since it is larger than the sum of its proper divisors (216475).

1400002073 is an equidigital number, since it uses as much as digits as its factorization.

1400002073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216474.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1400002073 is about 37416.6015693569. The cubic root of 1400002073 is about 1118.6894942340.

The spelling of 1400002073 in words is "one billion, four hundred million, two thousand, seventy-three".