1390503429 has 60 divisors (see below), whose sum is σ = 2543613600. Its totient is φ = 752712912.

The previous prime is 1390503407. The next prime is 1390503431. The reversal of 1390503429 is 9243050931.

It is a happy number.

It is not a de Polignac number, because 1390503429 - 2⁹ = 1390502917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1390503393 and 1390503402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390503469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 66192 + ... + 84630.

It is an arithmetic number, because the mean of its divisors is an integer number (42393560).

Almost surely, 2^1390503429 is an apocalyptic number.

1390503429 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1390503429 is a deficient number, since it is larger than the sum of its proper divisors (1153110171).

1390503429 is a wasteful number, since it uses less digits than its factorization.

1390503429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18484 (or 18468 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1390503429 is about 37289.4546621428. The cubic root of 1390503429 is about 1116.1537465946.

The spelling of 1390503429 in words is "one billion, three hundred ninety million, five hundred three thousand, four hundred twenty-nine".