400124847 has 8 divisors (see below), whose sum is σ = 545906944. Its totient is φ = 260546328.

The previous prime is 400124839. The next prime is 400124891. The reversal of 400124847 is 748421004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400124847 - 2³ = 400124839 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 (400124807) 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, 1550743 + ... + 1551000.

It is an arithmetic number, because the mean of its divisors is an integer number (68238368).

Almost surely, 2^400124847 is an apocalyptic number.

400124847 is a deficient number, since it is larger than the sum of its proper divisors (145782097).

400124847 is a wasteful number, since it uses less digits than its factorization.

400124847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101789.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 400124847 is about 20003.1209314947. The cubic root of 400124847 is about 736.8829484676.

The spelling of 400124847 in words is "four hundred million, one hundred twenty-four thousand, eight hundred forty-seven".