400834747 has 4 divisors (see below), whose sum is σ = 404512240. Its totient is φ = 397157256.

The previous prime is 400834739. The next prime is 400834757. The reversal of 400834747 is 747438004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 400834747 - 2³ = 400834739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400834757) 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, 1838583 + ... + 1838800.

It is an arithmetic number, because the mean of its divisors is an integer number (101128060).

Almost surely, 2^400834747 is an apocalyptic number.

400834747 is a deficient number, since it is larger than the sum of its proper divisors (3677493).

400834747 is a wasteful number, since it uses less digits than its factorization.

400834747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677492.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 400834747 is about 20020.8577988057. The cubic root of 400834747 is about 737.3184826474.

The spelling of 400834747 in words is "four hundred million, eight hundred thirty-four thousand, seven hundred forty-seven".