1400817129 has 4 divisors (see below), whose sum is σ = 1867756176. Its totient is φ = 933878084.

The previous prime is 1400817113. The next prime is 1400817137. The reversal of 1400817129 is 9217180041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1400817129 - 2⁴ = 1400817113 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400817129.

It is not an unprimeable number, because it can be changed into a prime (1400817169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233469519 + ... + 233469524.

It is an arithmetic number, because the mean of its divisors is an integer number (466939044).

Almost surely, 2^1400817129 is an apocalyptic number.

It is an amenable number.

1400817129 is a deficient number, since it is larger than the sum of its proper divisors (466939047).

1400817129 is an equidigital number, since it uses as much as digits as its factorization.

1400817129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466939046.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1400817129 is about 37427.4916204653. The cubic root of 1400817129 is about 1118.9065457455.

The spelling of 1400817129 in words is "one billion, four hundred million, eight hundred seventeen thousand, one hundred twenty-nine".