1390924853 has 4 divisors (see below), whose sum is σ = 1472743980. Its totient is φ = 1309105728.

The previous prime is 1390924837. The next prime is 1390924859. The reversal of 1390924853 is 3584290931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1008253009 + 382671844 = 31753^2 + 19562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390924853 - 2⁴ = 1390924837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390924859) 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 3 ways as a sum of consecutive naturals, for example, 40909538 + ... + 40909571.

It is an arithmetic number, because the mean of its divisors is an integer number (368185995).

Almost surely, 2^1390924853 is an apocalyptic number.

It is an amenable number.

1390924853 is a deficient number, since it is larger than the sum of its proper divisors (81819127).

1390924853 is an equidigital number, since it uses as much as digits as its factorization.

1390924853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81819126.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 1390924853 is about 37295.1049468962. The cubic root of 1390924853 is about 1116.2664938811.

The spelling of 1390924853 in words is "one billion, three hundred ninety million, nine hundred twenty-four thousand, eight hundred fifty-three".