1390923223 has 2 divisors, whose sum is σ = 1390923224. Its totient is φ = 1390923222.

The previous prime is 1390923211. The next prime is 1390923241. The reversal of 1390923223 is 3223290931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390923223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390923263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695461611 + 695461612.

It is an arithmetic number, because the mean of its divisors is an integer number (695461612).

Almost surely, 2^1390923223 is an apocalyptic number.

1390923223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390923223 is an equidigital number, since it uses as much as digits as its factorization.

1390923223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1390923223 is about 37295.0830941560. The cubic root of 1390923223 is about 1116.2660578367.

The spelling of 1390923223 in words is "one billion, three hundred ninety million, nine hundred twenty-three thousand, two hundred twenty-three".