1398345941 has 2 divisors, whose sum is σ = 1398345942. Its totient is φ = 1398345940.

The previous prime is 1398345929. The next prime is 1398345997. The reversal of 1398345941 is 1495438931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1114558225 + 283787716 = 33385^2 + 16846^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398345941 - 2¹⁴ = 1398329557 is a prime.

It is a super-2 number, since 2×1398345941² = 3910742741422350962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398375941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699172970 + 699172971.

It is an arithmetic number, because the mean of its divisors is an integer number (699172971).

Almost surely, 2^1398345941 is an apocalyptic number.

It is an amenable number.

1398345941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398345941 is an equidigital number, since it uses as much as digits as its factorization.

1398345941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 1398345941 is about 37394.4640421547. The cubic root of 1398345941 is about 1118.2482023876.

The spelling of 1398345941 in words is "one billion, three hundred ninety-eight million, three hundred forty-five thousand, nine hundred forty-one".