400700734 has 24 divisors (see below), whose sum is σ = 706121928. Its totient is φ = 170024400.

The previous prime is 400700689. The next prime is 400700737. The reversal of 400700734 is 437007004.

It is a happy number.

It is a super-2 number, since 2×400700734² = 321122156456277512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400700699 and 400700708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400700737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10344 + ... + 30139.

It is an arithmetic number, because the mean of its divisors is an integer number (29421747).

Almost surely, 2^400700734 is an apocalyptic number.

400700734 is a deficient number, since it is larger than the sum of its proper divisors (305421194).

400700734 is a wasteful number, since it uses less digits than its factorization.

400700734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40600 (or 40593 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 400700734 is about 20017.5106843983. The cubic root of 400700734 is about 737.2363030821.

Adding to 400700734 its reverse (437007004), we get a palindrome (837707738).

The spelling of 400700734 in words is "four hundred million, seven hundred thousand, seven hundred thirty-four".