1394039807 has 4 divisors (see below), whose sum is σ = 1395382560. Its totient is φ = 1392697056.

The previous prime is 1394039789. The next prime is 1394039809. The reversal of 1394039807 is 7089304931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1394039807 - 2⁶ = 1394039743 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 (1394039809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669818 + ... + 671895.

It is an arithmetic number, because the mean of its divisors is an integer number (348845640).

Almost surely, 2^1394039807 is an apocalyptic number.

1394039807 is a deficient number, since it is larger than the sum of its proper divisors (1342753).

1394039807 is a wasteful number, since it uses less digits than its factorization.

1394039807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342752.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1394039807 is about 37336.8424883519. The cubic root of 1394039807 is about 1117.0991596063.

The spelling of 1394039807 in words is "one billion, three hundred ninety-four million, thirty-nine thousand, eight hundred seven".