356949947 has 2 divisors, whose sum is σ = 356949948. Its totient is φ = 356949946.

The previous prime is 356949917. The next prime is 356949959. The reversal of 356949947 is 749949653.

It is a strong prime.

It is an emirp because it is prime and its reverse (749949653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 356949947 - 2¹⁰ = 356948923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 356949892 and 356949901.

It is not a weakly prime, because it can be changed into another prime (356949907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178474973 + 178474974.

It is an arithmetic number, because the mean of its divisors is an integer number (178474974).

Almost surely, 2^356949947 is an apocalyptic number.

356949947 is a deficient number, since it is larger than the sum of its proper divisors (1).

356949947 is an equidigital number, since it uses as much as digits as its factorization.

356949947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 56.

The square root of 356949947 is about 18893.1190384224. The cubic root of 356949947 is about 709.3639393749.

The spelling of 356949947 in words is "three hundred fifty-six million, nine hundred forty-nine thousand, nine hundred forty-seven".