401269037764 has 27 divisors (see below), whose sum is σ = 816887166543. Its totient is φ = 171968644008.

The previous prime is 401269037753. The next prime is 401269037777. The reversal of 401269037764 is 467730962104.

The square root of 401269037764 is 633458.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×401269037764² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8845789 + ... + 8891035.

Almost surely, 2^401269037764 is an apocalyptic number.

401269037764 is the 633458-th square number.

It is an amenable number.

401269037764 is an abundant number, since it is smaller than the sum of its proper divisors (415618128779).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401269037764 is an frugal number, since it uses more digits than its factorization.

401269037764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90512 (or 45256 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

Multiplying 401269037764 by its sum of digits (49), we get a square (19662182850436 = 4434206²).

401269037764 divided by its sum of digits (49) gives a square (8189164036 = 90494²).

Adding to 401269037764 its reverse (467730962104), we get a palindrome (868999999868).

The spelling of 401269037764 in words is "four hundred one billion, two hundred sixty-nine million, thirty-seven thousand, seven hundred sixty-four".