1400254398 has 64 divisors (see below), whose sum is σ = 3255390720. Its totient is φ = 445300416.

The previous prime is 1400254397. The next prime is 1400254411. The reversal of 1400254398 is 8934520041.

1400254398 is a `hidden beast` number, since 14 + 0 + 0 + 254 + 398 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400254397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566361 + ... + 568827.

It is an arithmetic number, because the mean of its divisors is an integer number (50865480).

Almost surely, 2^1400254398 is an apocalyptic number.

1400254398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400254398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627695360).

1400254398 is an abundant number, since it is smaller than the sum of its proper divisors (1855136322).

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

1400254398 is a wasteful number, since it uses less digits than its factorization.

1400254398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958 (or 2952 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1400254398 is about 37419.9732495896. The cubic root of 1400254398 is about 1118.7566980322.

The spelling of 1400254398 in words is "one billion, four hundred million, two hundred fifty-four thousand, three hundred ninety-eight".