1398404854 has 32 divisors (see below), whose sum is σ = 2699569152. Its totient is φ = 527256000.

The previous prime is 1398404851. The next prime is 1398404857. The reversal of 1398404854 is 4584048931.

It is an interprime number because it is at equal distance from previous prime (1398404851) and next prime (1398404857).

It is a super-2 number, since 2×1398404854² = 3911072271381522632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398404851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141687 + ... + 151234.

It is an arithmetic number, because the mean of its divisors is an integer number (84361536).

Almost surely, 2^1398404854 is an apocalyptic number.

1398404854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1398404854 is a deficient number, since it is larger than the sum of its proper divisors (1301164298).

1398404854 is a wasteful number, since it uses less digits than its factorization.

1398404854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292972.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 1398404854 is about 37395.2517574090. The cubic root of 1398404854 is about 1118.2639062821.

The spelling of 1398404854 in words is "one billion, three hundred ninety-eight million, four hundred four thousand, eight hundred fifty-four".