1401201629 has 2 divisors, whose sum is σ = 1401201630. Its totient is φ = 1401201628.

The previous prime is 1401201589. The next prime is 1401201667. The reversal of 1401201629 is 9261021041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 761870404 + 639331225 = 27602^2 + 25285^2 .

It is an emirp because it is prime and its reverse (9261021041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401201629 is a prime.

It is a super-2 number, since 2×1401201629² = 3926732010224507282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1401201598 and 1401201607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401201029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700600814 + 700600815.

It is an arithmetic number, because the mean of its divisors is an integer number (700600815).

Almost surely, 2^1401201629 is an apocalyptic number.

It is an amenable number.

1401201629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401201629 is an equidigital number, since it uses as much as digits as its factorization.

1401201629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1401201629 is about 37432.6278666086. The cubic root of 1401201629 is about 1119.0089098589.

The spelling of 1401201629 in words is "one billion, four hundred one million, two hundred one thousand, six hundred twenty-nine".