400763047 has 4 divisors (see below), whose sum is σ = 403221880. Its totient is φ = 398304216.

The previous prime is 400763003. The next prime is 400763059. The reversal of 400763047 is 740367004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400763047 is a prime.

It is a super-2 number, since 2×400763047² = 321222039681448418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400763747) 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, 1229172 + ... + 1229497.

It is an arithmetic number, because the mean of its divisors is an integer number (100805470).

Almost surely, 2^400763047 is an apocalyptic number.

400763047 is a deficient number, since it is larger than the sum of its proper divisors (2458833).

400763047 is a wasteful number, since it uses less digits than its factorization.

400763047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458832.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 400763047 is about 20019.0670861556. The cubic root of 400763047 is about 737.2745169915.

The spelling of 400763047 in words is "four hundred million, seven hundred sixty-three thousand, forty-seven".