1394949637 has 8 divisors (see below), whose sum is σ = 1477984536. Its totient is φ = 1312023552.

The previous prime is 1394949629. The next prime is 1394949653. The reversal of 1394949637 is 7369494931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5225796 + 1389723841 = 2286^2 + 37279^2 .

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

It is not a de Polignac number, because 1394949637 - 2³ = 1394949629 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 (1394949667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 52819.

It is an arithmetic number, because the mean of its divisors is an integer number (184748067).

Almost surely, 2^1394949637 is an apocalyptic number.

1394949637 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1394949637 is a deficient number, since it is larger than the sum of its proper divisors (83034899).

1394949637 is a wasteful number, since it uses less digits than its factorization.

1394949637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54407.

The product of its digits is 4408992, while the sum is 55.

The square root of 1394949637 is about 37349.0245789632. The cubic root of 1394949637 is about 1117.3421343261.

The spelling of 1394949637 in words is "one billion, three hundred ninety-four million, nine hundred forty-nine thousand, six hundred thirty-seven".