1390994349 has 8 divisors (see below), whose sum is σ = 1963756800. Its totient is φ = 872780736.

The previous prime is 1390994327. The next prime is 1390994387. The reversal of 1390994349 is 9434990931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1390994349 - 2¹⁵ = 1390961581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 27274399 = 1390994349 / (1 + 3 + 9 + 0 + 9 + 9 + 4 + 3 + 4 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390994399) 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 7 ways as a sum of consecutive naturals, for example, 13637149 + ... + 13637250.

It is an arithmetic number, because the mean of its divisors is an integer number (245469600).

Almost surely, 2^1390994349 is an apocalyptic number.

It is an amenable number.

1390994349 is a deficient number, since it is larger than the sum of its proper divisors (572762451).

1390994349 is a wasteful number, since it uses less digits than its factorization.

1390994349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27274419.

The product of its (nonzero) digits is 944784, while the sum is 51.

The square root of 1390994349 is about 37296.0366392999. The cubic root of 1390994349 is about 1116.2850845725.

The spelling of 1390994349 in words is "one billion, three hundred ninety million, nine hundred ninety-four thousand, three hundred forty-nine".