97920442 has 16 divisors (see below), whose sum is σ = 155797992. Its totient is φ = 45998080.

The previous prime is 97920439. The next prime is 97920467. The reversal of 97920442 is 24402979.

It can be written as a sum of positive squares in 4 ways, for example, as 86285521 + 11634921 = 9289^2 + 3411^2 .

It is a super-2 number, since 2×97920442² = 19176825922950728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19548 + ... + 24040.

Almost surely, 2^97920442 is an apocalyptic number.

97920442 is a deficient number, since it is larger than the sum of its proper divisors (57877550).

97920442 is a wasteful number, since it uses less digits than its factorization.

97920442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 97920442 is about 9895.4758349460. The cubic root of 97920442 is about 460.9188345145.

The spelling of 97920442 in words is "ninety-seven million, nine hundred twenty thousand, four hundred forty-two".