400130651 has 4 divisors (see below), whose sum is σ = 400543704. Its totient is φ = 399717600.

The previous prime is 400130639. The next prime is 400130657. The reversal of 400130651 is 156031004.

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 400130651 - 2¹⁸ = 399868507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400130657) 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, 205070 + ... + 207011.

It is an arithmetic number, because the mean of its divisors is an integer number (100135926).

Almost surely, 2^400130651 is an apocalyptic number.

400130651 is a deficient number, since it is larger than the sum of its proper divisors (413053).

400130651 is an equidigital number, since it uses as much as digits as its factorization.

400130651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413052.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 400130651 is about 20003.2660083297. The cubic root of 400130651 is about 736.8865113955.

Adding to 400130651 its reverse (156031004), we get a palindrome (556161655).

The spelling of 400130651 in words is "four hundred million, one hundred thirty thousand, six hundred fifty-one".