400000699999 has 4 divisors (see below), whose sum is σ = 421053368440. Its totient is φ = 378948031560.

The previous prime is 400000699981. The next prime is 400000700017. The reversal of 400000699999 is 999996000004.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (400000699981) and next prime (400000700017).

It is a de Polignac number, because none of the positive numbers 2^k-400000699999 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 (400000693999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10526334192 + ... + 10526334229.

It is an arithmetic number, because the mean of its divisors is an integer number (105263342110).

Almost surely, 2^400000699999 is an apocalyptic number.

400000699999 is a deficient number, since it is larger than the sum of its proper divisors (21052668441).

400000699999 is a wasteful number, since it uses less digits than its factorization.

400000699999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21052668440.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The spelling of 400000699999 in words is "four hundred billion, six hundred ninety-nine thousand, nine hundred ninety-nine".