400674407 has 4 divisors (see below), whose sum is σ = 457913616. Its totient is φ = 343435200.

The previous prime is 400674403. The next prime is 400674431. The reversal of 400674407 is 704476004.

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 400674407 - 2² = 400674403 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 (400674403) 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, 28619594 + ... + 28619607.

It is an arithmetic number, because the mean of its divisors is an integer number (114478404).

Almost surely, 2^400674407 is an apocalyptic number.

400674407 is a deficient number, since it is larger than the sum of its proper divisors (57239209).

400674407 is an equidigital number, since it uses as much as digits as its factorization.

400674407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57239208.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 400674407 is about 20016.8530743471. The cubic root of 400674407 is about 737.2201566636.

The spelling of 400674407 in words is "four hundred million, six hundred seventy-four thousand, four hundred seven".