1390974429 has 16 divisors (see below), whose sum is σ = 2004129792. Its totient is φ = 853055808.

The previous prime is 1390974359. The next prime is 1390974443. The reversal of 1390974429 is 9244790931.

It is a happy number.

It is not a de Polignac number, because 1390974429 - 2¹⁵ = 1390941661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390974469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49437 + ... + 72290.

It is an arithmetic number, because the mean of its divisors is an integer number (125258112).

Almost surely, 2^1390974429 is an apocalyptic number.

It is an amenable number.

1390974429 is a deficient number, since it is larger than the sum of its proper divisors (613155363).

1390974429 is a wasteful number, since it uses less digits than its factorization.

1390974429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122036.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 1390974429 is about 37295.7695858391. The cubic root of 1390974429 is about 1116.2797558892.

The spelling of 1390974429 in words is "one billion, three hundred ninety million, nine hundred seventy-four thousand, four hundred twenty-nine".