1398954311 has 4 divisors (see below), whose sum is σ = 1401282624. Its totient is φ = 1396626000.

The previous prime is 1398954307. The next prime is 1398954313. The reversal of 1398954311 is 1134598931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1134598931 = 53 ⋅21407527.

It is a cyclic number.

It is not a de Polignac number, because 1398954311 - 2² = 1398954307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398954313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163255 + ... + 1164456.

It is an arithmetic number, because the mean of its divisors is an integer number (350320656).

Almost surely, 2^1398954311 is an apocalyptic number.

1398954311 is a deficient number, since it is larger than the sum of its proper divisors (2328313).

1398954311 is an equidigital number, since it uses as much as digits as its factorization.

1398954311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328312.

The product of its digits is 116640, while the sum is 44.

The square root of 1398954311 is about 37402.5976504306. The cubic root of 1398954311 is about 1118.4103487263.

The spelling of 1398954311 in words is "one billion, three hundred ninety-eight million, nine hundred fifty-four thousand, three hundred eleven".