363969261 has 8 divisors (see below), whose sum is σ = 539213760. Its totient is φ = 242646156.

The previous prime is 363969257. The next prime is 363969283. The reversal of 363969261 is 162969363.

It is a happy number.

363969261 is a `hidden beast` number, since 3 + 639 + 6 + 9 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 363969261 - 2² = 363969257 is a prime.

It is a super-2 number, since 2×363969261² = 264947245905772242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363969241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6740145 + ... + 6740198.

It is an arithmetic number, because the mean of its divisors is an integer number (67401720).

Almost surely, 2^363969261 is an apocalyptic number.

It is an amenable number.

363969261 is a deficient number, since it is larger than the sum of its proper divisors (175244499).

363969261 is a wasteful number, since it uses less digits than its factorization.

363969261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480352 (or 13480346 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 363969261 is about 19077.9784306409. The cubic root of 363969261 is about 713.9835989453.

It can be divided in two parts, 3639 and 69261, that added together give a square (72900 = 270²).

The spelling of 363969261 in words is "three hundred sixty-three million, nine hundred sixty-nine thousand, two hundred sixty-one".