4000398492 has 24 divisors (see below), whose sum is σ = 9339434496. Its totient is φ = 1332727408.

The previous prime is 4000398473. The next prime is 4000398497. The reversal of 4000398492 is 2948930004.

It is a self number, because there is not a number n which added to its sum of digits gives 4000398492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000398497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69558 + ... + 113309.

It is an arithmetic number, because the mean of its divisors is an integer number (389143104).

Almost surely, 2^4000398492 is an apocalyptic number.

It is an amenable number.

4000398492 is an abundant number, since it is smaller than the sum of its proper divisors (5339036004).

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

4000398492 is a wasteful number, since it uses less digits than its factorization.

4000398492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184697 (or 184695 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 4000398492 is about 63248.7034807829. The cubic root of 4000398492 is about 1587.4537641028.

The spelling of 4000398492 in words is "four billion, three hundred ninety-eight thousand, four hundred ninety-two".