401772429 has 6 divisors (see below), whose sum is σ = 580337966. Its totient is φ = 267848280.

The previous prime is 401772419. The next prime is 401772439. The reversal of 401772429 is 924277104.

401772429 is a `hidden beast` number, since 401 + 7 + 7 + 242 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (401772419) and next prime (401772439).

It can be written as a sum of positive squares in only one way, i.e., 341399529 + 60372900 = 18477^2 + 7770^2 .

It is not a de Polignac number, because 401772429 - 2⁹ = 401771917 is a prime.

It is a super-2 number, since 2×401772429² = 322842169409120082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401772393 and 401772402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401772419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22320682 + ... + 22320699.

Almost surely, 2^401772429 is an apocalyptic number.

It is an amenable number.

401772429 is a deficient number, since it is larger than the sum of its proper divisors (178565537).

401772429 is a wasteful number, since it uses less digits than its factorization.

401772429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44641387 (or 44641384 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 401772429 is about 20044.2617474428. The cubic root of 401772429 is about 737.8929769674.

The spelling of 401772429 in words is "four hundred one million, seven hundred seventy-two thousand, four hundred twenty-nine".