69406983490 has 24 divisors (see below), whose sum is σ = 135282017268. Its totient is φ = 25627193280.

The previous prime is 69406983439. The next prime is 69406983493. The reversal of 69406983490 is 9438960496.

It can be written as a sum of positive squares in 6 ways, for example, as 11060097889 + 58346885601 = 105167^2 + 241551^2 .

It is a super-2 number, since 2×69406983490² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (69406983493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20532921 + ... + 20536300.

Almost surely, 2^69406983490 is an apocalyptic number.

69406983490 is a deficient number, since it is larger than the sum of its proper divisors (65875033778).

69406983490 is a wasteful number, since it uses less digits than its factorization.

69406983490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41069254 (or 41069241 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 69406983490 in words is "sixty-nine billion, four hundred six million, nine hundred eighty-three thousand, four hundred ninety".