356454139 has 2 divisors, whose sum is σ = 356454140. Its totient is φ = 356454138.

The previous prime is 356454071. The next prime is 356454143. The reversal of 356454139 is 931454653.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-356454139 is a prime.

It is not a weakly prime, because it can be changed into another prime (356454169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178227069 + 178227070.

It is an arithmetic number, because the mean of its divisors is an integer number (178227070).

Almost surely, 2^356454139 is an apocalyptic number.

356454139 is a deficient number, since it is larger than the sum of its proper divisors (1).

356454139 is an equidigital number, since it uses as much as digits as its factorization.

356454139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The square root of 356454139 is about 18879.9930879225. The cubic root of 356454139 is about 709.0353486885.

The spelling of 356454139 in words is "three hundred fifty-six million, four hundred fifty-four thousand, one hundred thirty-nine".