400962791 has 4 divisors (see below), whose sum is σ = 405793752. Its totient is φ = 396131832.

The previous prime is 400962769. The next prime is 400962797. The reversal of 400962791 is 197269004.

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 400962791 - 2¹⁰ = 400961767 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 (400962797) 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, 2415356 + ... + 2415521.

It is an arithmetic number, because the mean of its divisors is an integer number (101448438).

Almost surely, 2^400962791 is an apocalyptic number.

400962791 is a deficient number, since it is larger than the sum of its proper divisors (4830961).

400962791 is an equidigital number, since it uses as much as digits as its factorization.

400962791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830960.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 400962791 is about 20024.0553085533. The cubic root of 400962791 is about 737.3969847878.

The spelling of 400962791 in words is "four hundred million, nine hundred sixty-two thousand, seven hundred ninety-one".