97444431 has 16 divisors (see below), whose sum is σ = 164985600. Its totient is φ = 55682424.

The previous prime is 97444429. The next prime is 97444469. The reversal of 97444431 is 13444479.

It is not a de Polignac number, because 97444431 - 2¹ = 97444429 is a prime.

It is a super-2 number, since 2×97444431² = 18990834265827522, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97444411) 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, 257601 + ... + 257978.

It is an arithmetic number, because the mean of its divisors is an integer number (10311600).

Almost surely, 2^97444431 is an apocalyptic number.

97444431 is a deficient number, since it is larger than the sum of its proper divisors (67541169).

97444431 is a wasteful number, since it uses less digits than its factorization.

97444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515595 (or 515589 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 97444431 is about 9871.3945823273. The cubic root of 97444431 is about 460.1707478912.

The spelling of 97444431 in words is "ninety-seven million, four hundred forty-four thousand, four hundred thirty-one".