400061619 has 16 divisors (see below), whose sum is σ = 594115200. Its totient is φ = 266063688.

The previous prime is 400061617. The next prime is 400061633. The reversal of 400061619 is 916160004.

400061619 is a `hidden beast` number, since 40 + 0 + 0 + 6 + 1 + 619 = 666.

It is not a de Polignac number, because 400061619 - 2¹ = 400061617 is a prime.

It is a super-2 number, since 2×400061619² = 320098597993802322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 400061592 and 400061601.

It is not an unprimeable number, because it can be changed into a prime (400061617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6369 + ... + 28994.

It is an arithmetic number, because the mean of its divisors is an integer number (37132200).

Almost surely, 2^400061619 is an apocalyptic number.

400061619 is a deficient number, since it is larger than the sum of its proper divisors (194053581).

400061619 is a wasteful number, since it uses less digits than its factorization.

400061619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35791 (or 35785 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 400061619 is about 20001.5404156780. The cubic root of 400061619 is about 736.8441321750.

The spelling of 400061619 in words is "four hundred million, sixty-one thousand, six hundred nineteen".