400377629 has 16 divisors (see below), whose sum is σ = 433185408. Its totient is φ = 369052992.

The previous prime is 400377623. The next prime is 400377643. The reversal of 400377629 is 926773004.

It is a cyclic number.

It is not a de Polignac number, because 400377629 - 2⁴ = 400377613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400377592 and 400377601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400377623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88859 + ... + 93255.

It is an arithmetic number, because the mean of its divisors is an integer number (27074088).

Almost surely, 2^400377629 is an apocalyptic number.

It is an amenable number.

400377629 is a deficient number, since it is larger than the sum of its proper divisors (32807779).

400377629 is a wasteful number, since it uses less digits than its factorization.

400377629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 400377629 is about 20009.4384978689. The cubic root of 400377629 is about 737.0380929886.

The spelling of 400377629 in words is "four hundred million, three hundred seventy-seven thousand, six hundred twenty-nine".