398718054 has 24 divisors (see below), whose sum is σ = 987302160. Its totient is φ = 113919408.

The previous prime is 398718029. The next prime is 398718079. The reversal of 398718054 is 450817893.

It is an interprime number because it is at equal distance from previous prime (398718029) and next prime (398718079).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1582089 + ... + 1582340.

It is an arithmetic number, because the mean of its divisors is an integer number (41137590).

Almost surely, 2^398718054 is an apocalyptic number.

398718054 is an abundant number, since it is smaller than the sum of its proper divisors (588584106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398718054 is a wasteful number, since it uses less digits than its factorization.

398718054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164444 (or 3164441 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 398718054 is about 19967.9256308711. The cubic root of 398718054 is about 736.0183357810.

The spelling of 398718054 in words is "three hundred ninety-eight million, seven hundred eighteen thousand, fifty-four".