1401999029 has 2 divisors, whose sum is σ = 1401999030. Its totient is φ = 1401999028.

The previous prime is 1401998981. The next prime is 1401999083. The reversal of 1401999029 is 9209991041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872907025 + 529092004 = 29545^2 + 23002^2 .

It is an emirp because it is prime and its reverse (9209991041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401999029 - 2¹⁶ = 1401933493 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 (1401999329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700999514 + 700999515.

It is an arithmetic number, because the mean of its divisors is an integer number (700999515).

Almost surely, 2^1401999029 is an apocalyptic number.

It is an amenable number.

1401999029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401999029 is an equidigital number, since it uses as much as digits as its factorization.

1401999029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 1401999029 is about 37443.2774874209. The cubic root of 1401999029 is about 1119.2211392473.

The spelling of 1401999029 in words is "one billion, four hundred one million, nine hundred ninety-nine thousand, twenty-nine".