1400807129 has 16 divisors (see below), whose sum is σ = 1509580800. Its totient is φ = 1295677584.

The previous prime is 1400807063. The next prime is 1400807131. The reversal of 1400807129 is 9217080041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400807129 is a prime.

It is a super-2 number, since 2×1400807129² = 3924521225314445282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400807095 and 1400807104.

It is not an unprimeable number, because it can be changed into a prime (1400804129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415352 + ... + 418710.

It is an arithmetic number, because the mean of its divisors is an integer number (94348800).

Almost surely, 2^1400807129 is an apocalyptic number.

1400807129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1400807129 is a deficient number, since it is larger than the sum of its proper divisors (108773671).

1400807129 is a wasteful number, since it uses less digits than its factorization.

1400807129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1400807129 is about 37427.3580285865. The cubic root of 1400807129 is about 1118.9038832300.

The spelling of 1400807129 in words is "one billion, four hundred million, eight hundred seven thousand, one hundred twenty-nine".