400629449 has 8 divisors (see below), whose sum is σ = 437434560. Its totient is φ = 363888400.

The previous prime is 400629431. The next prime is 400629469. The reversal of 400629449 is 944926004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400629449 - 2²⁸ = 132193993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400629419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2429 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (54679320).

Almost surely, 2^400629449 is an apocalyptic number.

It is an amenable number.

400629449 is a deficient number, since it is larger than the sum of its proper divisors (36805111).

400629449 is a wasteful number, since it uses less digits than its factorization.

400629449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32031.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 400629449 is about 20015.7300391467. The cubic root of 400629449 is about 737.1925821684.

The spelling of 400629449 in words is "four hundred million, six hundred twenty-nine thousand, four hundred forty-nine".