1393365949 has 2 divisors, whose sum is σ = 1393365950. Its totient is φ = 1393365948.

The previous prime is 1393365923. The next prime is 1393365973. The reversal of 1393365949 is 9495633931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1194048025 + 199317924 = 34555^2 + 14118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393365949 - 2²⁵ = 1359811517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1393365896 and 1393365905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393365979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696682974 + 696682975.

It is an arithmetic number, because the mean of its divisors is an integer number (696682975).

Almost surely, 2^1393365949 is an apocalyptic number.

It is an amenable number.

1393365949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393365949 is an equidigital number, since it uses as much as digits as its factorization.

1393365949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2361960, while the sum is 52.

The square root of 1393365949 is about 37327.8173618550. The cubic root of 1393365949 is about 1116.9191342521.

The spelling of 1393365949 in words is "one billion, three hundred ninety-three million, three hundred sixty-five thousand, nine hundred forty-nine".