97269821 has 16 divisors (see below), whose sum is σ = 107783808. Its totient is φ = 87048000.

The previous prime is 97269817. The next prime is 97269841. The reversal of 97269821 is 12896279.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97269821 - 2² = 97269817 is a prime.

It is a super-2 number, since 2×97269821² = 18922836154744082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97269841) 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, 260591 + ... + 260963.

It is an arithmetic number, because the mean of its divisors is an integer number (6736488).

Almost surely, 2^97269821 is an apocalyptic number.

It is an amenable number.

97269821 is a deficient number, since it is larger than the sum of its proper divisors (10513987).

97269821 is a wasteful number, since it uses less digits than its factorization.

97269821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its digits is 108864, while the sum is 44.

The square root of 97269821 is about 9862.5463750494. The cubic root of 97269821 is about 459.8957246312.

The spelling of 97269821 in words is "ninety-seven million, two hundred sixty-nine thousand, eight hundred twenty-one".