400249999999 has 16 divisors (see below), whose sum is σ = 448820275968. Its totient is φ = 354949322112.

The previous prime is 400249999997. The next prime is 400250000023. The reversal of 400249999999 is 999999942004.

It is a cyclic number.

It is not a de Polignac number, because 400249999999 - 2¹ = 400249999997 is a prime.

400249999999 is a modest number, since divided by 999999 gives 400249 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400249999997) 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, 7613037 + ... + 7665430.

It is an arithmetic number, because the mean of its divisors is an integer number (28051267248).

Almost surely, 2^400249999999 is an apocalyptic number.

400249999999 is a deficient number, since it is larger than the sum of its proper divisors (48570275969).

400249999999 is a wasteful number, since it uses less digits than its factorization.

400249999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15278574.

The product of its (nonzero) digits is 153055008, while the sum is 73.

The spelling of 400249999999 in words is "four hundred billion, two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".