400061946479 has 16 divisors (see below), whose sum is σ = 450820339200. Its totient is φ = 352247925216.

The previous prime is 400061946469. The next prime is 400061946551. The reversal of 400061946479 is 974649160004.

It is a cyclic number.

It is not a de Polignac number, because 400061946479 - 2¹² = 400061942383 is a prime.

It is a super-2 number, since 2×400061946479² (a number of 24 digits) 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 (400061946469) 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, 1756169 + ... + 1970850.

It is an arithmetic number, because the mean of its divisors is an integer number (28176271200).

Almost surely, 2^400061946479 is an apocalyptic number.

400061946479 is a deficient number, since it is larger than the sum of its proper divisors (50758392721).

400061946479 is a wasteful number, since it uses less digits than its factorization.

400061946479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727414.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 400061946479 in words is "four hundred billion, sixty-one million, nine hundred forty-six thousand, four hundred seventy-nine".