1393493426 has 16 divisors (see below), whose sum is σ = 2252104344. Its totient is φ = 642843264.

The previous prime is 1393493399. The next prime is 1393493443. The reversal of 1393493426 is 6243943931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 540795025 + 852698401 = 23255^2 + 29201^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48056 + ... + 71388.

Almost surely, 2^1393493426 is an apocalyptic number.

1393493426 is a deficient number, since it is larger than the sum of its proper divisors (858610918).

1393493426 is a wasteful number, since it uses less digits than its factorization.

1393493426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25645.

The product of its digits is 419904, while the sum is 44.

The square root of 1393493426 is about 37329.5248563386. The cubic root of 1393493426 is about 1116.9531949759.

The spelling of 1393493426 in words is "one billion, three hundred ninety-three million, four hundred ninety-three thousand, four hundred twenty-six".