1393690417 has 4 divisors (see below), whose sum is σ = 1592789056. Its totient is φ = 1194591780.

The previous prime is 1393690393. The next prime is 1393690457. The reversal of 1393690417 is 7140963931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1393690417 - 2⁷ = 1393690289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393690457) 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, 99549309 + ... + 99549322.

It is an arithmetic number, because the mean of its divisors is an integer number (398197264).

Almost surely, 2^1393690417 is an apocalyptic number.

It is an amenable number.

1393690417 is a deficient number, since it is larger than the sum of its proper divisors (199098639).

1393690417 is an equidigital number, since it uses as much as digits as its factorization.

1393690417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199098638.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 1393690417 is about 37332.1633045823. The cubic root of 1393690417 is about 1117.0058251392.

The spelling of 1393690417 in words is "one billion, three hundred ninety-three million, six hundred ninety thousand, four hundred seventeen".