1429317940 has 96 divisors (see below), whose sum is σ = 3251404800. Its totient is φ = 526078080.

The previous prime is 1429317931. The next prime is 1429317941. The reversal of 1429317940 is 497139241.

It is a junction number, because it is equal to n+sod(n) for n = 1429317893 and 1429317902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429317941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3411051 + ... + 3411469.

It is an arithmetic number, because the mean of its divisors is an integer number (33868800).

Almost surely, 2^1429317940 is an apocalyptic number.

1429317940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1429317940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625702400).

1429317940 is an abundant number, since it is smaller than the sum of its proper divisors (1822086860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1429317940 is a wasteful number, since it uses less digits than its factorization.

1429317940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1429317940 is about 37806.3214290944. The cubic root of 1429317940 is about 1126.4440228956. Note that the first 3 decimals are identical.

The spelling of 1429317940 in words is "one billion, four hundred twenty-nine million, three hundred seventeen thousand, nine hundred forty".