400249047 has 16 divisors (see below), whose sum is σ = 583418880. Its totient is φ = 242059200.

The previous prime is 400249033. The next prime is 400249061. The reversal of 400249047 is 740942004.

It is an interprime number because it is at equal distance from previous prime (400249033) and next prime (400249061).

It is not a de Polignac number, because 400249047 - 2⁶ = 400248983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400249007) 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, 3147 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (36463680).

Almost surely, 2^400249047 is an apocalyptic number.

400249047 is a deficient number, since it is larger than the sum of its proper divisors (183169833).

400249047 is a wasteful number, since it uses less digits than its factorization.

400249047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25814.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 400249047 is about 20006.2252061702. The cubic root of 400249047 is about 736.9591841684.

The spelling of 400249047 in words is "four hundred million, two hundred forty-nine thousand, forty-seven".